WO2013132761A1 - センサデバイス - Google Patents
センサデバイス Download PDFInfo
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- WO2013132761A1 WO2013132761A1 PCT/JP2013/000924 JP2013000924W WO2013132761A1 WO 2013132761 A1 WO2013132761 A1 WO 2013132761A1 JP 2013000924 W JP2013000924 W JP 2013000924W WO 2013132761 A1 WO2013132761 A1 WO 2013132761A1
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- flow path
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- carrier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502761—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads, for physically stretching molecules
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
- B01L2200/0668—Trapping microscopic beads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/069—Absorbents; Gels to retain a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/043—Moving fluids with specific forces or mechanical means specific forces magnetic forces
Definitions
- the present invention relates to a sensor device that can be used for detecting, for example, viruses.
- FIG. 22 is a cross-sectional view of a sensor device 600 disclosed in Patent Document 1 that can be used for virus detection or the like, for example.
- the sensor device 600 includes a prism 601, a flat metal layer 602 disposed on the lower surface of the prism 601, an insulating layer 603 having a predetermined flat dielectric constant disposed on the lower surface of the metal layer 602, And an acceptor 604 fixed to the lower surface of the insulating layer 603.
- a surface plasmon wave which is an electron density wave, exists.
- a light source 605 is arranged above the prism 601 side, and P-polarized light is incident on the prism 601 from the light source 605 under total reflection conditions.
- evanescent waves are generated on the surfaces of the metal layer 602 and the insulating layer 603.
- the light totally reflected by the metal layer 602 is received by the detection unit 606, and the intensity of the light is detected.
- the wave number matching condition in which the wave numbers of the evanescent wave and the surface plasmon wave match is satisfied, the energy of light supplied from the light source 605 is used for excitation of the surface plasmon wave, and the intensity of the reflected light decreases.
- the wave number matching condition depends on the incident angle of light supplied from the light source 605. Accordingly, when the reflected light intensity is detected by the detection unit 606 while changing the incident angle, the intensity of the reflected light decreases at a certain incident angle.
- the resonance angle which is the angle at which the intensity of the reflected light is minimized, depends on the dielectric constant of the insulating layer 603.
- the specific binding substance generated by specifically binding the analyte as the substance to be measured in the sample and the acceptor 604 is formed on the lower surface of the insulating layer 603, the dielectric constant of the insulating layer 603 changes, In accordance with this, the resonance angle changes. Therefore, by monitoring the change in the resonance angle, it is possible to detect the strength of binding and the speed of binding in the specific binding reaction between the analyte and the acceptor 604.
- the sensor device includes a flow channel configured to allow a sample including an analyte to flow and a carrier to be disposed, and a metal layer provided in the flow channel.
- a plurality of acceptors that specifically bind to the analyte and generate aggregates are immobilized on the surface of the carrier.
- the flow path has an aggregate trap part configured so that the analyte is unevenly distributed.
- This sensor device has a simple configuration and high detection sensitivity.
- FIG. 1A is a top view of the sensor device according to Embodiment 1 of the present invention.
- 1B is a cross-sectional view of the sensor device shown in FIG. 1A taken along line 1B-1B.
- FIG. 2A is a sectional side view of the sensor device according to Embodiment 1.
- 2B is a top cross-sectional view of the sensor device shown in FIG. 2A.
- FIG. 3 is a conceptual diagram showing specific binding between the acceptor and the analyte of the sensor device in the first embodiment.
- 4A is a side sectional view of the sensor device according to Embodiment 1.
- FIG. FIG. 4B is a sectional side view of the sensor device according to Embodiment 1.
- FIG. 4A is a side sectional view of the sensor device according to Embodiment 1.
- FIG. 5 is a conceptual diagram of an electromagnetic field simulation analysis model of the sensor device in the first embodiment.
- FIG. 6 is a diagram showing an analysis result of the electromagnetic simulation of the sensor device in the first embodiment.
- FIG. 7A is a side sectional view of the sensor device according to Embodiment 1.
- FIG. 7B is a sectional side view of the sensor device according to Embodiment 1.
- FIG. 8A is a side sectional view of the sensor device according to Embodiment 1.
- FIG. 8B is a side sectional view of the sensor device according to Embodiment 1.
- FIG. 9 is a side sectional view of the sensor device according to the first exemplary embodiment.
- FIG. 10 is a side sectional view of the sensor device according to the first embodiment.
- FIG. 11 is a sectional side view of the sensor device according to the first embodiment.
- FIG. 12 is a side sectional view of the sensor device according to the first embodiment.
- FIG. 13A is a top cross-sectional view of the sensor device according to Embodiment 2 of the present invention.
- FIG. 13B is a top cross-sectional view of another sensor device according to Embodiment 2.
- FIG. 14A is a side sectional view of the sensor device according to the second exemplary embodiment. 14B is a top cross-sectional view of the sensor device shown in FIG. 14A.
- FIG. 15 is a conceptual diagram of an aggregate.
- FIG. 16A is a sectional side view of the sensor device according to Embodiment 3 of the present invention.
- FIG. 16B is an enlarged view of the sensor device shown in FIG.
- FIG. 18A is a top cross-sectional view of a sensor device according to Embodiment 4 of the present invention.
- 18B is a cross-sectional side view of the sensor device shown in FIG. 18A taken along line 18B-18B.
- FIG. 18C is a top cross-sectional view of another sensor device according to Embodiment 4.
- 18D is a side cross-sectional view of the sensor device shown in FIG. 18C taken along line 18D-18D.
- FIG. 19A is a top cross-sectional view of a sensor device according to Embodiment 5 of the present invention.
- 19B is a side cross-sectional view of the sensor device shown in FIG.
- FIG. 20A is a top cross-sectional view of the sensor device according to the sixth embodiment of the present invention.
- 20B is a cross-sectional side view of the sensor device shown in FIG. 20A taken along line 20B-20B.
- FIG. 21A is a cross-sectional view of the sensor device according to Embodiment 7 of the present invention.
- FIG. 21B is a bottom perspective view of the sensor device according to Embodiment 7.
- FIG. 22 is a cross-sectional view of a conventional sensor device.
- FIG. 1A is a top view of sensor device 1 according to Embodiment 1 of the present invention.
- FIG. 1B is a cross-sectional view taken along line 1B-1B of the sensor device 1 shown in FIG. 1A.
- the sensor device 1 is a MIM (Metal Insulator Metal) type sensor device.
- the sensor device 1 has flowed through the flow path 4, the inlet 24 for injecting the sample, the storage unit 25 for temporarily storing the injected sample, the flow path 4 for flowing the injected sample into the sensor, and the like.
- a storage section 26 for storing the tested sample, and metal layers 2 and 3 provided in at least a part of the flow path 4 are provided.
- the user injects the sample to be inspected into the storage unit 25 from the injection port 24 using the spoid 27 or the like.
- the flow path 4 includes a holding portion 5 that is disposed on the upper side of the sensor device 1 and holds the metal layer 2, a holding portion 6 that is disposed on the lower side of the sensor device 1 and holds the metal layer 3, a side wall portion 21, and a side wall portion. 22.
- a specific region 18 sandwiched between the metal layers 2, 3, an input region 15 disposed in front of the specific region 18, and a discharge region 16 disposed after the region 18 are provided. ing.
- the sample stored in the storage unit 25 is input to the input region 15 of the flow path 4 by capillary action or the like.
- the sample put into the flow path 4 flows in the direction of the arrow 17 in the flow path 4, is discharged from the discharge area 16 via the area 18, and is stored in the storage section 26.
- the analyte that is the specimen in the sample is trapped in the region 18 in the flow path 4 and detected.
- the region 18 functions as an aggregate trap portion for trapping analyte aggregates.
- a portion sandwiched between the metal layer 2 and the metal layer 3 in the flow path 4 constitutes a detection unit.
- 2A and 2B are a side sectional view and a top sectional view showing the main part of the sensor device 1, respectively.
- the metal layer 3 is disposed below the metal layer 2 so as to face the metal layer 2 through the flow path 4.
- the metal layers 2 and 3 are made of a metal such as gold or silver.
- the side wall portion 21 is disposed to face the side wall portion 22 with the flow path 4 interposed therebetween.
- the lower surface 2B of the metal layer 2 constitutes the upper surface of the channel 4
- the upper surface 3A of the metal layer 3 constitutes the lower surface of the channel 4
- the side surface 21A of the side wall portion 21 constitutes the first side surface of the channel 4.
- the side surface 22 ⁇ / b> A of the side wall portion 22 constitutes the second side surface of the flow path 4.
- a plurality of carriers 10 are physically adsorbed and fixed to at least one of the lower surface 2B of the metal layer 2 and the upper surface 3A of the metal layer 3 by a weak force such as van der Waals force.
- the carrier 10 includes a plurality of acceptors 7 that specifically bind to an analyte 8 that is a specimen, which is fixed to the surface of a substance made of metal, resin, or the like.
- the size of the substance made of metal, resin or the like is preferably 1/10 or less of the wavelength of the electromagnetic wave incident from above the sensor device 1.
- the size of the substance is, for example, the diameter of the substance.
- This wavelength indicates a wavelength that takes into account the influence of the refractive index in the flow path 4.
- the size of the substance made of metal, resin, etc. is 1/10 or more of the wavelength of the incident electromagnetic wave, the influence of Mie scattering is strong, but when it is 1/10 or less, the influence of Rayleigh scattering is strong.
- Rayleigh scattering is very small because its scattering intensity is proportional to the -6th power of the radius of the substance, and the influence of scattering can be almost ignored, so that the sensitivity of the sensor device 1 can be improved.
- visible light (especially having a wavelength of 500 to 500 nm used for observation) is incident as an electromagnetic wave incident from above the sensor device 1.
- the size of the substance made of metal, resin or the like is preferably 50 to 60 nm or less.
- the sample 62 When using the sensor device 1, the sample 62 is charged into the flow path 4 from the input region 15 and filled, and the filled sample 62 is discharged from the discharge region 16. Therefore, the sample 62 in the flow path 4 is substantially sandwiched between the metal layers 2 and 3.
- the sample 62 contains the analyte 8, the nonspecific specimen 9, and the medium 61.
- the medium 61 is made of a fluid such as liquid or gel, and carries the analyte 8 and the nonspecific specimen 9.
- the metal layer 2 Since the metal layer 2 has a thickness of approximately 100 nm or less, the shape cannot be maintained alone.
- the upper surface 2A of the metal layer 2 is fixed to the lower surface 5B of the holding portion 5 and the shape thereof is held.
- the metal layer 3 is fixed and held on the upper surface 6A of the holding portion 6.
- the electromagnetic wave 91 is incident from the upper surface 2A of the metal layer 2.
- the metal layer 2 preferably has a film thickness in the range of 10 nm to 45 nm.
- the metal layer 3 When the metal layer 3 is made of gold, the metal layer 3 preferably has a film thickness of 100 nm or more. When the thickness of the metal layer 3 is less than 100 nm, the incident electromagnetic wave 91 that is visible light is transmitted through the metal layer 3 and the amount of the electromagnetic wave 91 reflected into the flow path 4 is reduced.
- An electromagnetic wave source 92 is disposed above the upper surface 2A of the metal layer 2, that is, in the direction opposite to the metal layer 3 with respect to the metal layer 2.
- the electromagnetic wave source 92 applies an electromagnetic wave 91 from above the upper surface 2 ⁇ / b> A of the metal layer 2 to the metal layer 2.
- the acceptor 7 refers to a capturing body that specifically binds to a specific analyte.
- a specific analyte for example, an antibody, a receptor protein, an aptamer, a porphyrin, a polymer generated by a molecular imprinting technique, and the like. Point to.
- a filter 23 is disposed between the storage unit 25 and the flow path 4.
- the filter 23 removes unnecessary materials such as dust mixed in the sample.
- the electromagnetic wave 91 is light
- the electromagnetic wave source 92 is a light source.
- a part of the electromagnetic wave applied to the upper surface 2A from above the metal layer 2 at the incident angle ⁇ is reflected by the upper surface 2A and the lower surface 2B and propagates upward from the metal layer 2 in the direction of the reflection angle ⁇ . Go.
- the incident angle ⁇ is an angle between the normal direction of the upper surface of the metal layer 2 and the incident direction of the electromagnetic wave.
- the electromagnetic waves reflected by the metal layer 2 and propagating upward from the metal layer 2 in the direction of the angle ⁇ are referred to as first electromagnetic waves.
- an electromagnetic wave that passes through the metal layer 2 from the flow path 4 and propagates upward from the metal layer 2 in the direction of the angle ⁇ is referred to as a second electromagnetic wave.
- most of the electromagnetic waves that have arrived from the lower surface 2B of the metal layer 2 and did not pass through the metal layer 2 are reflected by the lower surface 2B and the upper surface 2A of the metal layer 2 and propagate again downward in the flow path 4. I will do it.
- the first electromagnetic wave and the second electromagnetic wave interfere with each other.
- the integer m, the wavelength ⁇ of the electromagnetic wave in vacuum, the thickness d of the flow path 4, that is, the distance d between the lower surface of the metal layer 2 and the upper surface of the metal layer 3, the refractive index n and the incident angle in the hollow region The condition of the expression 1 or 2 expressed by ⁇ is satisfied.
- the distance d satisfies the condition of Expression 1
- the first electromagnetic wave and the second electromagnetic wave are weakened
- the distance d satisfies the condition of Expression 2
- the first electromagnetic wave and the second electromagnetic wave are strengthened.
- the interference conditions are mainly the thickness of the shape of the metal layer 2 and the metal layer 3, the distance between the metal layer 2 and the metal layer 3, the dielectric constant (refractive index) of the metal layer 2, and the dielectric constant (refractive index of the metal layer 3). ), And can be controlled by the refractive index in the flow path 4.
- a detection unit 94 that detects an electromagnetic wave 93 such as light is disposed above the upper surface 2A of the metal layer 2.
- the detection unit 94 receives the electromagnetic wave 93 such as light reflected or radiated from the sensor device 1.
- the detection unit 94 is not always necessary.
- the electromagnetic wave 91 is visible light, the color change and intensity of the electromagnetic wave 91 can be detected by the user's own eyes. Thereby, a simple and inexpensive sensor device 1 can be constructed.
- the holding unit 5 is formed of a material that hardly attenuates the electromagnetic wave 91 in order to efficiently supply the electromagnetic wave 91 to the metal layer 2.
- the holding unit 5 is formed of a transparent material such as glass or transparent plastic that efficiently transmits light.
- the thickness of the holding portion 5 is preferably as small as possible within a range that is acceptable in terms of mechanical strength.
- the holding part 6 is preferably formed of a material that blocks the electromagnetic wave 91 such as light.
- the holding part 6 is formed from a metal or semiconductor having a thickness of 100 nm or more.
- a plurality of carriers 10 are arranged on the lower surface 2B of the metal layer 2 on the flow path 4 side.
- the carrier 10 is composed of a plurality of acceptors 7 fixed on the surface of a substance made of metal or resin.
- FIG. 3 is a conceptual diagram showing specific binding between the acceptor 7 and the analyte 8 of the carrier 10 of the sensor device 1 according to the first embodiment.
- the sample 62 contains a non-specific specimen 9 and an analyte 8 which is a specimen.
- the acceptor 7 of the carrier 10 does not specifically bind to the nonspecific analyte 9 but selectively specifically binds only to the analyte 8.
- a plurality of carriers 10 are combined through the analyte 8 to form an aggregate 11. For example, in FIG.
- the carrier 10 a has a plurality of acceptors fixed on the surface, and one of the acceptors 7 a specifically binds to the analyte 8.
- the carrier 10b has a plurality of acceptors fixed on the surface, and one of the acceptors 7b is specifically bound to the analyte 8.
- the two carriers 10a and 10b are bonded to each other with the analyte 8 interposed therebetween to form one aggregate 11. Since each of the carriers 10a and 10b has a plurality of acceptors, when this acceptor specifically binds to another analyte 8, more carriers can be bound to form an aggregate having a larger size. Become. In the sensor device 1 shown in FIGS.
- the carrier 10 is disposed only on the lower surface 2B of the metal layer 2. However, in addition to the lower surface 2B of the metal layer 2, the carrier 10 is also disposed on the upper surface 3A of the metal layer 3. May be arranged. Further, the carrier 10 may be disposed not only on the lower surface 2B of the metal layer 2 but only on the upper surface 3A of the metal layer 3.
- FIG. 4A and 4B are side sectional views showing the operation of the sensor device 1 according to Embodiment 1.
- FIG. 4A the carrier 10 is fixed to the lower surface 2B of the metal layer 2 by physical adsorption in the flow path 4 filled with vacuum or air.
- the state of the flow path 4 particularly the dielectric constant (refractive index) changes.
- the wavelength ⁇ of the electromagnetic wave that interferes and weakens based on Equations 1 and 2 above the metal layer 2 changes, and the frequency distribution of the electromagnetic wave detected by the detection unit 94 changes.
- the detection unit 94 changes.
- a flow is given from the outside to the direction of the arrow 17 to the sample 62 introduced into the flow path 4. Since the carrier 10 disposed on the lower surface 2B of the metal layer 2 is physically fixed to the lower surface 2B by a weak force caused by van der Waals force, the carrier 10 is peeled off from the lower surface 2B of the metal layer 2 by this flow. It floats in the road 4 and flows in the direction of arrow 17. The acceptor 7 and the analyte 8 of the carrier 10 are specifically bound while flowing in the flow path 4, and the other carrier 10 is specifically bound to the analyte 8, and this is repeated to repeat the aggregation. A collection 11 is formed.
- the aggregate 11 Since the aggregate 11 is heavier than the carrier 10, the non-specific specimen 9, and the medium 61, the aggregate 11 flows slowly.
- the dielectric constant changes in the region 18, so that the dielectric constant (refractive index) of the medium 61 between the metal layers 2 and 3.
- the dielectric constant distribution changes.
- the situation of electromagnetic waves propagating upward changes. Therefore, by detecting the change in the state of the electromagnetic wave propagating upward from the metal layer 2, the state of the specific binding between the acceptor 7 and the analyte 8, specifically, the strength of the specific binding, the binding speed. Etc. can be detected.
- FIG. 5 is a conceptual diagram of an analysis model for electromagnetic field simulation of the sensor device 1 according to the first embodiment.
- the metal layer 2 is made of silver and has a thickness of 30 nm.
- the metal layer 3 is made of silver and has a thickness of 130 nm.
- the distance between the metal layers 2 and 3 is 160 nm, and the flow path 4 is filled with air having a relative dielectric constant of 1. Air above the upper surface 2A of the metal layer 2 and below the lower surface 3B of the metal layer 3 is filled with air.
- the metal layers 2 and 3 and the channel 4 continue infinitely in the horizontal direction.
- the first electromagnetic wave and the second electromagnetic wave are propagated upward from the metal layer 2 with respect to the energy amount of the electromagnetic wave incident from above the metal layer 2 as well as a change in frequency or wavelength at which the first electromagnetic wave and the second electromagnetic wave weaken.
- a change in reflectance R501 which is a ratio of electromagnetic energy amounts, is also detected.
- a change in the state of the medium in the flow path 4 can be detected by using two indices of frequency or wavelength and wavelength simultaneously. Thereby, the sensor device 1 can exhibit a high detection capability.
- the state of the medium in the flow path 4 refers to the state of the substance filled in part or all of the flow path 4, for example, the composition of the substance itself and the distribution of the substance in the flow path 4.
- FIG. 6 shows the analysis result of the model of FIG.
- the horizontal axis indicates the wavelength
- the vertical axis indicates the reflectance R501.
- Equation 1 is a condition in which electromagnetic waves having a wavelength around 340 nm cancel each other, the reflectance is greatly reduced at a wavelength around 340 nm.
- the sensor device 1 can be used as a simple influenza virus sensor that can be used at home by injecting a sample containing human saliva into the flow path 4.
- a simple influenza virus sensor that can be used at home by injecting a sample containing human saliva into the flow path 4.
- higher detection sensitivity and ease of use are required as compared with business sensors used in hospitals and the like.
- the electromagnetic wave source 92 is preferably a visible light source that generates visible light as an electromagnetic wave that can be easily detected by a person without using a special detector.
- FIG. 7A and 7B are side sectional views of the sensor device according to Embodiment 1 in which the analyte is unevenly distributed.
- FIG. 7A shows a state in the channel 4 immediately after the sample is put into the channel 4.
- FIG. 7B shows a state in the flow path 4 after a predetermined time has elapsed. 7A and 7B and the subsequent drawings, only the analyte 8 is shown as the sample 62, and the medium and the specimen are omitted.
- a plurality of carriers 10 are unevenly packed in a specific region 18 (aggregate trap part) between the lower surface 2B of the metal layer 2 and the upper surface 3A of the metal layer 3, and fixed by physical adsorption. ing. That is, the density of the carrier 10 that is physically adsorbed in the region 18 is higher than the density of the carrier 10 in another region other than the region 18 in the flow path 4.
- the physical adsorption occurs by using van der Waals force acting on the interface between the metal layers 2 and 3 and the carrier 10 and the interface between the carriers 10.
- an aggregate 11 including the analyte 8 as a specimen is formed and fills a specific region 18 of the flow path 4 as shown in FIG. 7B.
- the specific region 18 functions as an aggregate trap part that traps the aggregate 11.
- the dielectric constant in the flow path 4 in the region 18 does not change greatly and propagates upward from the metal layer 2 before and after aggregation.
- the interference condition between electromagnetic waves does not change greatly.
- the color of the reflected light does not change before and after the sample is charged.
- the aggregate 11 is not formed, so that the carrier 10 flows through the flow path 4 together with the sample 62 and exits from the specific region 18.
- the dielectric constant of the region 18 changes greatly compared to the case where the analyte 8 is present and the aggregate 11 is formed, and the interference state between the electromagnetic waves propagating upward from the metal layer 2 changes.
- the color of light propagating upward from the metal layer 2 changes compared to before the sample is charged.
- the presence or absence of the analyte 8 in the sample 62 can be confirmed by human detection of the change in the color of the light.
- a structure for holding the aggregate in the region 18 may be provided so that the aggregate 11 shown in FIG. 7B does not easily flow out of the region 18 due to the flow of the sample 62 in the direction of the arrow 17.
- a portion of the surface of the metal layers 2 and 3 facing the region 18 and having a friction coefficient increased by roughening can be used.
- FIG. 8A and 8B are side sectional views of the sensor device 1 in which the analyte 8 is unevenly distributed.
- FIG. 8A shows a state in the channel 4 immediately after the sample is put into the channel 4.
- FIG. 8B shows a state in the flow path 4 after a predetermined time has elapsed since the sample was introduced.
- the plurality of acceptors 7 are unevenly distributed in a specific region 18 on the lower surface 2B of the metal layer 2 and are fixed to the lower surface 2B by chemical adsorption, and do not exist in other regions of the flow path 4.
- a plurality of carriers 10 are fixed to the lower surface 2B by physical adsorption on the side of the lower surface 2B of the metal layer 2 that is closer to the input region 15 than the region 18 is.
- the carrier 10 is peeled off from the lower surface 2B of the metal layer 2 by the flow of the sample as shown in FIG. 8B.
- Aggregates 11 are formed by floating in the path 4 and specifically binding to the analyte 8 as the specimen.
- the aggregate 11 flows in the direction of the arrow 17 according to the flow of the sample, and in the region 18 (aggregate trap part) in the flow path 4, the plurality of acceptors 7 and the analytes 8 arranged on the lower surface 2B of the metal layer 2 are interposed. Specific binding.
- the aggregate 11 containing the analyte 8 is trapped in the region 18.
- the analyte 8 in the sample can be unevenly distributed in the region 18.
- the dielectric constant changes greatly between the region 18 and other regions, and the detection sensitivity of the analyte 8 is improved.
- the state of the electromagnetic wave propagating upward from the region of the metal layer 2 in contact with the region 18 of the flow path 4 for example, the color of visible light
- the region from the region of the metal layer 2 in contact with other than the region 18 of the flow path 4 Since the state of the electromagnetic wave propagating to (for example, the color of visible light) changes, the user can easily visually confirm the presence of the analyte even at home.
- the acceptor 7 since the acceptor 7 is adsorbed and fixed to the lower surface 2B of the metal layer 2 by a covalent bond, the aggregate 11 can be more firmly fixed as compared with physical adsorption. For this reason, it becomes easy to intensively fix the aggregate 11 in the region 18 serving as a detection region, and the sensor device 1 with high sensitivity can be realized.
- FIG. 9 is a side sectional view of the sensor device 1 shown in FIGS. 8A and 8B showing a configuration for accelerating aggregation using ultrasonic waves.
- the sensor device 1 shown in FIG. 9 further includes an ultrasonic wave generation source 31a and an ultrasonic wave generation source 31b provided on a part of the lower surface 2B of the metal layer 2 and a part of the upper surface 3A of the metal layer 3, respectively.
- the carriers 10a and 10b existing above the flow path 4 are moved by the ultrasonic waves generated by the ultrasonic wave generation sources 31a and 31b and are easily coupled to the analyte 8.
- an ultrasonic standing wave is generated between the metal layers 2 and 3, and the carrier 10 and the analyte 8 are collected in a predetermined region between the metal layers 2 and 3. You can increase the probability of joining.
- the carrier 10a and the carrier 10b are specifically bound to the analyte 8, and become an aggregate 11 and trapped in the region 18 via the analyte 8 to the acceptor 7 disposed on the lower surface 2B of the metal layer 2. Is done.
- by generating ultrasonic waves from the vertical direction of the flow path 4 of the sensor device 1 specific binding between the carrier 10 and the analyte 8 is likely to occur, and the aggregation of the analyte 8 can be accelerated.
- the ultrasonic wave generation source may be provided only on one of the lower surface 2B of the metal layer 2 and the upper surface 3A of the metal layer 3. Further, the ultrasonic wave generation source may be provided on the side surface 21 ⁇ / b> A of the side wall portion 21 and the side surface 22 ⁇ / b> A of the side wall portion 22 that constitute the flow path 4. Alternatively, it may be provided in a place where the metal layer 2 is not formed on the lower surface 5B of the holding part 5 or a place where the metal layer 3 is not formed on the upper surface 6A of the holding part 6.
- FIG. 10 is a side sectional view of the sensor device 1 that heats the flow path 4 to raise the temperature and accelerate the aggregation.
- the sensor device 1 shown in FIG. 10 further includes a heater 32 as a heating source provided on the upper surface 5A of the holding unit 5.
- the sample in the channel 4 is heated by the heater 32, and the kinetic energy of the carrier 10 and the analyte 8 is increased to accelerate the specific binding.
- the probability that they come into contact with each other increases, and they specifically bind to each other, so that the aggregate 11 is easily generated.
- the carrier 10a and the carrier 10b specifically bind to the analyte 8 and are trapped in the region 18 via the analyte 8 by the acceptor 7 arranged on the lower surface 2B of the metal layer 2 as an aggregate 11. Is done.
- specific binding between the carrier 10 and the analyte 8 is likely to occur, and the aggregation of the analyte 8 can be accelerated.
- the installation location of the heater 32 is not limited.
- FIG. 11 is a side sectional view of the sensor device 1 that accelerates aggregation by applying a magnetic field to the flow path 4.
- the sensor device 1 shown in FIG. 11 further includes a magnetic field generation source 33a and a magnetic field generation source 33b provided near the upper surface 5A of the holding unit 5 and the lower surface 6B of the holding unit 6, respectively.
- the magnetic field generation sources 33a and 33b generate the magnetic field M1 from above the flow path 4 to below.
- the carrier 10 is preferably made of a magnetic material so as to be attracted in the direction of the magnetic field M1.
- the carriers 10a and 10b made of a magnetic material are moved upward by the magnetic field M1 and are easily coupled to the analyte 8.
- the carrier 10a and the carrier 10b are specifically bound to the analyte 8, and become an aggregate 11 and are trapped in the region 18 via the analyte 8 by the acceptor 7 disposed on the lower surface 2B of the metal layer 2.
- The by generating the magnetic field M1 in the vertical direction of the flow path 4 of the sensor device 1, specific binding between the carrier 10 and the analyte 8 is likely to occur, and the aggregation of the analyte 8 can be accelerated.
- a method of applying the magnetic field M1 to the flow path 4 a method of applying the magnetic field M1 using a magnetic field generator held by the user without providing the magnetic field generation sources 33a and 33b may be used.
- the analyte 8 and the acceptor 7 of the carrier 10 are specifically bound in the flow path 4.
- 12 shows the side of the sensor device 1 in which the aggregate 11 is formed by specifically binding the analyte 8 and the carrier 10 to the region 18 outside the flow path 4, and then the aggregate 11 is flowed to the flow path 4.
- the aggregate 11 may be formed, for example, before being put into the sensor device 1.
- the aggregate 11 may be formed by specifically binding the analyte 8 and the carrier 10 in the storage unit 25.
- the specific binding between the analyte 8 and the carrier 10 can be surely caused, so that the detection accuracy can be increased.
- the sensor device 1 of FIG. 12 is provided with an acceptor 7 that is chemisorbed and fixed to the metal layers 2 and 3 shown in FIG. 8A, and the aggregate 11 is intensively trapped in the region 18 (aggregate trap part). May be fixed.
- FIG. 2 13A and 13B are top sectional views of the sensor device 100 according to the second embodiment. 13A and 13B, the same reference numerals are given to the same portions as those of the sensor device 1 in the first embodiment.
- a side sectional view of sensor device 100 in the second embodiment is the same as sensor device 1 shown in FIG. 1B in the first embodiment.
- 14A and 14B are a side sectional view and a top sectional view of the sensor device 100, respectively.
- the sensor device 100 is formed with a flow path 104 surrounded by four surfaces: a lower surface 102B of the metal layer 102, an upper surface 103A of the metal layer 103, a side surface 111A of the side wall 111, and a side surface 112A of the side wall 112.
- the lower surface 102B of the metal layer 102 constitutes the upper surface of the channel 104
- the upper surface 103A of the metal layer 103 constitutes the lower surface of the channel 104
- the side surface 111 ⁇ / b> A of the side wall portion 111 constitutes a first side surface of the channel 104
- the side surface 112 ⁇ / b> A of the side wall portion 112 constitutes a second side surface of the channel 104.
- the flow path 104 has a loading area 115 into which the sample 62 is loaded and a discharging area 116 into which the sample 62 is discharged.
- the flow path 104 is formed so that the width of the flow path 104, that is, the distance between the side surface 111A and the side surface 112A gradually decreases from the input area 115 to the discharge area 116. Relationship between the width W1 of the foremost end (left end of the drawing) of the input region 115 of the flow path 104, the width W3 of the rearmost end (right end of the drawing) of the discharge area 116, and the width W2 of an arbitrary location 104a located in the flow path 104 The flow path 104 is formed so that W1 ⁇ W2 ⁇ W3.
- the analyte 8 in the sample 62 and the acceptor 7 of the carrier 10 are specifically bound to form an aggregate 11.
- the width W4 of the discharge region 116 is larger than the diameter of the carrier 10 and smaller than the diameter of the aggregate 11. That is, the width W ⁇ b> 4 of the discharge region 116 is greater than the first predetermined value that is greater than or equal to the diameter of the carrier 10 and less than or equal to the second predetermined value that is smaller than the diameter of the aggregate 11.
- the aggregate 11 is trapped in a specific area 118 between the input area 115 and the discharge area 116 of the flow path 104.
- the region 118 is an aggregate trap portion that traps the aggregate 11.
- the flow path 104 is blocked.
- the next flowing aggregate 11 is stopped by the already trapped aggregate 11, and the aggregate 11 remains solidified in a specific region 118. That is, the carrier 10 present in the sample 62 and having a diameter equal to or smaller than the first predetermined value, the nonspecific specimen 9 having a smaller diameter than the carrier 10, and the medium 61 can pass through the region 118.
- the aggregate 11 present in the sample 62 and having a diameter larger than the second predetermined value cannot pass through the region 118.
- FIG. 15 is a conceptual diagram of the aggregate 11.
- Aggregates 11 are two or more carriers 10 bonded together via an analyte and can take various shapes.
- the diameter of the aggregate 11 indicates the maximum diameter R of the aggregate 11 as shown in FIG. That is, the second predetermined value is smaller than the maximum diameter RR.
- the aggregate 11 including the analyte 8 can be trapped in the specific region 118 of the flow path 104. Therefore, the dielectric constant in the region 118 is higher than that in other regions. Change greatly. As a result, the state of the electromagnetic wave propagating upward from the region of the metal layer 102 in contact with the region 118 of the channel 104 (for example, the color of visible light) and the region of the metal layer 102 in contact with other than the region 118 of the channel 104 Since the state of the electromagnetic wave propagating upward (for example, the color of visible light) changes, the user can easily visually confirm the presence of the analyte even at home. That is, the sensor device 100 according to the second embodiment has higher detection sensitivity than the sensor device in which the aggregate 11 is uniformly distributed in the flow path 104 without trapping the aggregate 11.
- the sensor device 100 illustrated in FIG. 13B further includes an absorbent material 113 disposed in the vicinity of the discharge region 116 of the flow path 104.
- the absorbent material 113 absorbs the sample 62.
- the flow of the sample 62 can be made in the direction from the input region 115 to the discharge region 116 of the flow path 104.
- the absorbent material 113 shown in FIG. 13B is added to the sensor device 100 shown in FIG. 13A.
- the absorbent material 113 can also be used in sensor devices other than the sensor device 100 shown in FIG. 13A, and the flow of the sample in the flow paths 4 and 104 can be increased as in the sensor device 100 shown in FIG. 13B.
- the width W2 of the flow path 104 continuously decreases from the front end of the input region 115 to the rear end of the discharge region 116.
- the width W ⁇ b> 2 of the flow path 104 may decrease discontinuously between the foremost end of the input region 115 and the rearmost end of the discharge region 116.
- the width of the region 118 continuously decreases, the width of at least one of the input region 115 and the discharge region 116 may be a constant value.
- FIG. 3 is a side sectional view and an enlarged side sectional view, respectively, of the sensor device 200 according to the third embodiment.
- the top view of sensor device 200 is the same as that of sensor device 1 in the first embodiment shown in FIG. 1A.
- the sensor device 200 includes two side surfaces of two side wall portions similar to the side wall portions 21 and 22 in the first embodiment, a lower surface 202B of the metal layer 202, and an upper surface 203A of the metal layer 203.
- the flow path 204 surrounded by the four surfaces is formed. Two side surfaces of the side wall portion constitute first and second side surfaces of the flow path 204.
- the lower surface 202B of the metal layer 202 constitutes the upper surface of the flow path 204.
- the upper surface 203 ⁇ / b> A of the metal layer 203 constitutes the lower surface of the flow path 204.
- the flow path 204 includes an input region 215 into which the sample 62 is input, a discharge region 216 from which the sample 62 is discharged, and a region 218 provided therebetween.
- a region 218 is an aggregate trap portion that traps the aggregate 11.
- the flow path 204 includes a flow path 204b (first flow path) made up of the input area 215 and the area 218 (aggregate trap part) and a flow path 204c (second flow path) made up of the discharge area 216. .
- the flow path 204 is formed so that the distance D1 between the upper surface 203A of the layer 203 and the distance D2 between the lower surface 202B of the metal layer 202 and the upper surface 203A of the metal layer 203 in the flow path 204c is D1> D2.
- the depth (interval D2) of the flow path 204c is set larger than the diameter of the carrier 10 and smaller than the diameter of the aggregate 11. That is, the depth (interval D2) of the flow path 204c is set to be equal to or smaller than a first predetermined value that is not less than the diameter of the carrier 10 and smaller than the diameter of the aggregate 11.
- FIG. 16B is an enlarged view of the region 218 where the aggregates 11 are trapped. That is, the carrier 10 whose diameter is equal to or smaller than the first predetermined value and the non-specific specimen 9 and the medium 61 having a diameter smaller than that of the carrier 10 can pass through the region 218, but the second predetermined Aggregates 11 having a diameter larger than the value cannot pass through region 218.
- the aggregate 11 including the analyte 8 can be trapped in the specific region 218 of the flow path 204, so that the dielectric constant in the region 218 is higher than that in other regions. Change greatly.
- the state of the electromagnetic wave propagating upward from the region of the metal layer 202 in contact with the region 218 of the channel 204 for example, the color of visible light
- the region of the metal layer 202 in contact with other than the region 218 of the channel 204 Since the state of the electromagnetic wave propagating upward (for example, the color of visible light) changes, the user can easily visually confirm the presence of the analyte even at home. That is, the sensor device 200 has higher analyte detection sensitivity than a sensor device in which the aggregate 11 is uniformly distributed in the flow path without trapping the aggregate 11.
- an absorbent material may be disposed in the vicinity of the discharge region 216 so as to create a flow in the sample 62 in the flow path 204 as in the second embodiment.
- the sample 62 can flow from the input region 215 to the discharge region 216 of the flow path 204.
- the aggregate 11 and the carrier 10 flow toward the discharge region 216, the aggregate 11 is trapped in the region 218, and the carrier 10 is discharged from the discharge region 216 to the outside of the flow path 204.
- FIG. 17 shows the electric field intensity distribution in the sensor device 200 according to the third embodiment.
- the interference state of electromagnetic waves propagating upward from the region in contact with the flow path 204b of the metal layer 202 and the upward propagation from the region in contact with the flow path 204c of the metal layer 202 are performed.
- the interference state of the electromagnetic wave that travels may be set to be approximately the same.
- both the flow path 204b and the flow path 204c are designed so as to satisfy the expression 1, or both are satisfied so as to satisfy the expression 2.
- the value of the integer m in Expression 1 and Expression 2 is different between the flow path 204b and the flow path 204c.
- the distance D1 between the upper surface and the lower surface of the flow path 204b and the distance D2 between the upper surface and the lower surface of the flow path 204c are integers m1 and m2, the wavelength ⁇ of the electromagnetic wave in vacuum, and the refractive index in the flow path 204.
- the reflected light from the region in contact with the flow path 204b of the metal layer 202 and the region in contact with the flow path 204c of the metal layer 202 are almost the same color. Therefore, the analyte 8 and the acceptor 7 of the carrier 10 are specifically bound to form an aggregate 11 and trapped by the aggregate trap part 218 (region 218), and a large number of aggregates 11 are collected in the aggregate trap part 218. It can be clearly seen that the color of the reflected light from the region in contact with the aggregate trap portion 218 of the metal layer 202 changes when it is placed. Accordingly, it is possible to realize the sensor device 200 that allows the user to easily visually check the presence of the analyte at home.
- the visible light band is a wavelength band of light that can be seen by human eyes, and is a range of wavelengths from 380 nm to 750 nm.
- the sensor device 200 is set so that the condition of Formula 2 is satisfied at a wavelength of 580 to 600 nm of orange to red that is a visible light band in a state where the sample 62 not containing the analyte 8 is put into the flow path 204. design.
- the sample containing the analyte 8 is introduced into the flow path 204, and the refractive index (dielectric constant) changes in the aggregate trap portion 218 (region 218).
- the constituent material of the carrier may be selected or the structure of the aggregate trap part 218 may be determined so that the formula 2 is satisfied when the wavelength of the reflected light is 560 nm or less.
- the wavelength of the reflected light changes across the wavelength (near 560 to 580 nm) showing a yellow color with a large color difference in the human eye depending on the presence or absence of specific binding. The presence or absence can be confirmed visually.
- a filter that allows only a specific wavelength to pass may be disposed between the upper side of the sensor device 200 and the eyes of the user who observes the sensor device 200.
- a filter that does not pass light having a wavelength shorter than 580 nm when a filter that does not pass light having a wavelength shorter than 580 nm is arranged, when the sample 62 does not contain an analyte, light of 580 nm or more passes through, so it looks bright, but the sample 62 contains an analyte. In this case, since the wavelength satisfying the condition of Expression 2 is attenuated by the filter, it looks dark. In some cases, light and dark differences are easier to perceive than color differences, and such a configuration may be effective.
- FIG. 18A is a top sectional view of sensor device 300 according to the fourth exemplary embodiment.
- 18B is a cross-sectional side view of sensor device 300 at line 18B-18B shown in FIG. 18A.
- 18A and 18B the same reference numerals are given to the same portions as those of the sensor device 1 in the first embodiment shown in FIGS. 2A and 2B.
- a flow path 304 surrounded by four surfaces, that is, a side surface 311A of the side wall 311, a side surface 312A of the side wall 312, a lower surface 2B of the metal layer 2, and an upper surface 3A of the metal layer 3 is formed. ing.
- a side surface 311A of the side wall portion 311 constitutes a first side surface of the channel 304, and a side surface 312A of the side wall portion 312 constitutes a second side surface of the channel 304.
- the lower surface 2B of the metal layer 2 constitutes the upper surface of the flow path 304.
- the upper surface 3 ⁇ / b> A of another metal layer 3 constitutes the lower surface of the channel 304.
- the sensor device 300 has a plurality of pillars 313 extending from the lower surface 2B of the metal layer 2 to the upper surface 3A of the metal layer 3 in parallel with the side surfaces 311A and 312A.
- the plurality of pillars 313 are provided in a specific region 318 of the flow path 304, and in the fourth embodiment, have a cylindrical shape.
- the plurality of pillars 313 may have a shape other than a cylindrical shape.
- the gap p1 between the two pillars 313 adjacent to each other, the gap p2 between the side wall 311 and the pillar 313, and the gap p3 between the side wall 312 and the pillar 313 serve as a gap between the plurality of pillars 313 and the side walls 311 and 312. 10 passes through, but the aggregate 11 is set to a size such that it is trapped.
- the gap p1 is the distance between the side peripheral surfaces of the two pillars 313 adjacent to each other.
- the gap p ⁇ b> 2 is a distance between the side surface 311 ⁇ / b> A of the side wall portion 311 and the side peripheral surface of the pillar 313.
- the gap p3 is a distance between the side surface 312A of the side wall portion 312 and the side peripheral surface of the pillar 313.
- the gaps p1, p2, and p3 are set larger than the diameter of the carrier 10 and smaller than the diameter of the aggregate 11. That is, the gaps p1, p2, and p3 are set to be larger than the first predetermined value that is equal to or larger than the diameter of the carrier 10 and smaller than the second predetermined value that is smaller than the diameter of the aggregate 11.
- the region 318 of the flow path 304 functions as an aggregate trap portion that traps the aggregate 11.
- the plurality of pillars 313 intersect with the side walls 311 and 312 in a predetermined manner so as to intersect with the direction in which the sample flows in the channel 304 at right angles, but incline and intersect with the direction in which the sample flows in the channel 304. It may be inclined and extended at an angle of.
- FIG. 18C is a top sectional view of another sensor device 300A according to Embodiment 4.
- 18D is a cross-sectional side view taken along line 18D-18D of sensor device 300A shown in FIG. 18C.
- 18C and 18D the same reference numerals are given to the same portions as those of the sensor device 300 shown in FIGS. 18A and 18B.
- the sensor device 300A includes a plurality of pillars 313a extending in parallel with the side surfaces 311A and 312A from the lower surface 2B of the metal layer 2 to the upper surface 3A of the metal layer 3 instead of the plurality of pillars 313 of the sensor device 300 shown in FIGS. 18A and 18B. 313b.
- the plurality of pillars 313a and 313b are provided in a specific region 318 of the flow path 304, and in the fourth embodiment, have a cylindrical shape.
- the plurality of pillars 313a and 313b may have a shape other than a columnar shape. Pillars 313a and 313b are arranged in two rows in a staggered manner. In this case as well, the gap between the pillars 313a and 313b adjacent to each other, the distance between the pillar 313a and the side surface 311A, and the gap between the pillar 313a and the side surface 312A, the gap between the pillars 313a and 313b and the side wall portions 311 and 312 is supported. 10 passes through, but the aggregate 11 is set to a size such that it is trapped.
- the plurality of pillars 313a and 313b may be arranged in three or more rows.
- the plurality of pillars 313 may be connected to the side surfaces 311A and 312A instead of the surfaces 2B and 3B of the metal layers 2 and 3 so that the flow path 304 extends in parallel with the surfaces 2B and 3B of the metal layers 2 and 3. . Also in this case, the gap between the two pillars 313 adjacent to each other, the gap between the pillar 313 and the upper surface 3A of the metal layer 3, and the gap between the pillar 313 and the lower surface 2B of the metal layer 2 are the same.
- the carrier 10 passes through this gap, but the agglomerates 11 are set to dimensions that are trapped.
- aggregate 11 including analyte 8 can be trapped in specific region 318 of flow path 304, so that the dielectric constant in region 318 is other region. It changes greatly compared to.
- the state of the electromagnetic wave propagating upward from the region of the metal layer 2 in contact with the region 318 of the flow channel 304 for example, the color of visible light
- the region of the metal layer 2 in contact with other than the region 318 of the flow channel 304 Since the state of the electromagnetic wave propagating upward (for example, the color of visible light) changes, the user can easily confirm the presence of the analyte even at home. That is, the sensor devices 300 and 300A have higher analyte detection sensitivity than a sensor device in which the aggregate 11 is uniformly distributed in the flow path without trapping the aggregate 11.
- the gaps between the pillars 313, 313a, and 313b adjacent to each other may be different from each other.
- FIG. 19A is a top sectional view of sensor device 400 in accordance with the fifth exemplary embodiment.
- FIG. 19B is a side cross-sectional view of the sensor device 400 shown in FIG. 19A taken along line 19B-19B.
- 19A and 19B the same reference numerals are given to the same portions as those of the sensor device 1 in the first embodiment shown in FIGS. 2A and 2B.
- the sensor device 400 shown in FIGS. 19A and 19B is surrounded by four surfaces: a side surface 411A of the side wall portion 411, a side surface 412A of the side wall portion 412, a lower surface 2B of the metal layer 2, and an upper surface 3A of the metal layer 3.
- a flow path 404 is formed.
- a side surface 411 ⁇ / b> A of the side wall part 411 constitutes a first side surface of the flow path 404.
- the side surface 412A of the side wall portion 412 constitutes the second side surface of the flow path 404.
- the lower surface 2B of the metal layer 2 constitutes the upper surface of the flow path 404.
- the upper surface 3A of the metal layer 3 constitutes the lower surface of the flow path 404.
- the sensor device 400 includes a plurality of fibrous substances 413 provided in a specific region 418 of the flow path 404.
- the plurality of fibrous materials 413 have a network structure in which voids are formed by being entangled with each other.
- the minimum diameter of the voids in the network structure is set such that the carrier 10 can pass through the voids but the aggregate 11 cannot pass through.
- the minimum diameter of the void is larger than the diameter of the carrier 10 and smaller than the diameter of the aggregate 11. That is, the minimum diameter of the gap is formed with a dimension that is larger than the first predetermined value that is equal to or larger than the diameter of the carrier 10 and smaller than the second predetermined value that is smaller than the diameter of the aggregate 11.
- a specific region 418 of the flow path 404 is provided with a network structure in which a plurality of fibrous substances 413 are entangled to form a void.
- the aggregate 11 which is a substance whose diameter is larger than the minimum diameter of the gap between the fibrous substances 413 is trapped by the fibrous substance 413 as a filtrate.
- the carrier 10 which is a substance whose diameter is smaller than the minimum diameter of the gap between the fibrous substances 413, passes between the fibrous substances 413.
- the region 418 of the flow path 404 functions as an aggregate trap portion that traps the aggregate 11.
- the fibrous substance 413 having the network structure may be composed of silicon dioxide nanofibers.
- the aggregate 11 including the analyte 8 can be trapped in the specific region 418 of the flow path 404. Therefore, the dielectric constant in the region 418 is higher than that in other regions. Change greatly.
- the state of the electromagnetic wave propagating upward from the region of the metal layer 2 in contact with the region 418 of the flow path 404 for example, the color of visible light
- the region of the metal layer 2 in contact with other than the region 418 of the flow path 404 Since the state of the electromagnetic wave propagating upward (for example, the color of visible light) changes, the user can easily confirm the presence of the analyte even at home. That is, the sensor device 400 has higher analyte detection sensitivity than a sensor device in which the aggregate 11 is uniformly distributed in the flow path without trapping the aggregate 11.
- FIG. 20A is a top cross-sectional view of sensor device 500 according to Embodiment 6.
- 20B is a side cross-sectional view of sensor device 500 shown in FIG. 20A taken along line 20B-20B.
- the same reference numerals are given to the same portions as those of the sensor device 1 in the first embodiment shown in FIGS. 2A and 2B.
- the sensor device 500 is surrounded by four surfaces: a side surface 511A of the side wall portion 511, a side surface 512A of the side wall portion 512, a lower surface 2B of the metal layer 2, and an upper surface 3A of the metal layer 3.
- a flow path 504 is formed.
- a side surface 511 ⁇ / b> A of the side wall portion 511 constitutes a first side surface of the flow path 504.
- a side surface 512 ⁇ / b> A of the side wall portion 512 constitutes a second side surface of the flow path 504.
- the lower surface 2B of the metal layer 2 constitutes the upper surface of the channel 504.
- the upper surface 3A of the metal layer 3 constitutes the lower surface of the flow path 504.
- the side surfaces 511A and 512A of the flow path 504 meander so as to have recesses 511P and 512P that are recessed in the specific regions 518a and 518b.
- the aggregate 11 is trapped in the recesses 511P and 512P formed in the regions 518a and 518b.
- the specific regions 518a and 518b of the flow path 504 function as an aggregate trap portion that traps the aggregate 11. It should be noted that only one of the side surface 511A and the side surface 512A may meander so as to have a recess.
- aggregate 11 including analyte 8 can be trapped in specific region 518 of flow path 504, so that the dielectric constant in region 518 is higher than that in other regions. Change greatly. Accordingly, the state of electromagnetic waves propagating upward from the region of the metal layer 2 in contact with the regions 518a and 518b of the flow path 504 (for example, the color of visible light) and the metal layer in contact with other than the regions 518a and 518b of the flow path 504 Since the state of electromagnetic waves propagating upward from the region 2 (for example, the color of visible light) changes, the user can easily confirm the presence of the analyte even at home. That is, the sensor device 500 has higher analyte detection sensitivity than a sensor device in which the aggregate 11 is uniformly distributed in the flow path without trapping the aggregate 11.
- FIGS. 7 and 21B are a sectional view and a bottom perspective view, respectively, of the sensor device 700 according to the seventh embodiment.
- the sensor device 700 according to the seventh embodiment is an ATR (Attenuated Total Reflection) type sensor device.
- the sensor device 700 includes a prism 701, an insulating layer 703 disposed on the lower surface of the prism 701, and a metal layer 702 provided on the lower surface of the insulating layer 703.
- the insulating layer 703 has a predetermined dielectric constant and has a flat lower surface.
- the insulating layer 703 of the sensor device 700 is made of a transparent insulator such as glass.
- a groove-shaped channel 704 is formed on the lower surface of the insulating layer 703.
- the flow path 704 includes three surfaces: a side surface 703C, a side surface 703D, and a lower surface 702B of the metal layer 702.
- the metal layer 702 is provided in at least a part of the lower surface 703 ⁇ / b> B of the insulating layer 703.
- the side surface 703C constitutes the first side surface of the flow path 704.
- the side surface 703D constitutes the second side surface of the flow path 704.
- the lower surface 702B of the metal layer 702 constitutes the upper surface of the channel 704.
- the flow path 704 has a loading area 715 for loading a sample, a discharging area 716 for discharging a sample, and a specific area 718 provided between the loading area 715 and the discharging area 716.
- the input sample flows into the region 718, and functions as an aggregate trap part that traps aggregates containing the analyte in the sample.
- a carrier on which a plurality of acceptors that specifically bind an analyte to form an aggregate is fixed is physically adsorbed on the surface.
- the sensor device 700 shown in FIG. 21A is used by turning it upside down during use.
- the sample introduced from the input region 715 flows from the input region 715 toward the discharge region 716 when the user pushes out the sample with a spoid or the like at the time of input.
- the analyte in the sample specifically binds to the carrier arranged in the channel 704 and forms an aggregate and is trapped in the region 718.
- the region 718 can be configured in the same manner as any of the specific regions 18, 118, 218, 318, 418, 518a, and 518b of the sensor device in the first, second, fourth, fifth, and sixth embodiments.
- a surface plasmon wave which is an electron density wave.
- a light source 705 is disposed above the prism 701 side, and P-polarized light is incident on the prism 701 from the light source 705 under total reflection conditions. At this time, evanescent waves are generated on the surfaces of the metal layer 702 and the insulating layer 703. The light totally reflected by the metal layer 702 is received by the detection unit 706, and the intensity of the light is detected.
- the wave number matching condition in which the wave numbers of the evanescent wave and the surface plasmon wave coincide with each other is satisfied, the energy of the light supplied from the light source 705 is used for excitation of the surface plasmon wave, and the intensity of the reflected light decreases.
- the wave number matching condition depends on the incident angle of light supplied from the light source 705. Accordingly, when the reflected light intensity is detected by the detector 706 while changing the incident angle, the intensity of the reflected light decreases at a certain incident angle.
- the resonance angle which is the angle at which the intensity of the reflected light is minimized, depends on the dielectric constant of the insulating layer 703.
- a specific binding substance generated by specifically binding an analyte which is a substance to be measured in the sample and an acceptor is formed on the upper surface of the insulating layer 703, the dielectric constant of the insulating layer 703 changes. Accordingly, the resonance angle changes. Therefore, by monitoring the change in the resonance angle, it is possible to detect the strength of binding and the speed of binding in the specific binding reaction between the analyte and the acceptor.
- the aggregate containing the analyte can be trapped in the specific region 718 of the flow path 704, so that the dielectric constant in the region 718 varies greatly compared to other regions.
- the sensor device 700 has an analyte detection sensitivity compared to a sensor device such as the conventional sensor device 600 shown in FIG. 22 in which the aggregate is uniformly distributed in the flow path without trapping the aggregate. Becomes higher.
- the sensor device of the present invention traps the aggregate containing the acceptor in a specific region in the flow path, whereby the acceptor can be unevenly distributed in that region. Therefore, the dielectric constant in a specific region in the flow path changes greatly compared to other regions, and it becomes possible to detect the acceptor in the sample with high sensitivity.
- the metal layer does not refer to only a planar layer, but also refers to a state in which fine metal particles are spread all over.
- the carrier and the acceptor are arranged only on the lower surface 2B of the metal layer 2, but this is not necessary.
- the same effect can be obtained by arranging only on the upper surface 3A of the metal layer 3 or arranging both on the surfaces 2B and 3A of the metal layers 2 and 3.
- the terms indicating directions such as “upper surface”, “lower surface”, “upper”, and “lower” are relative only depending on the relative positional relationship of the components of the sensor device such as the flow path and the metal layer. It does not indicate an absolute direction such as a vertical direction.
- the sensor device according to the present invention has high detection sensitivity and has a small and simple structure, so that it can be used for a small and low-cost biosensor.
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Abstract
Description
図1Aは本発明の実施の形態1におけるセンサデバイス1の上面図である。図1Bは図1Aに示すセンサデバイス1の線1B-1Bにおける断面図である。センサデバイス1はMIM(Metal Insulator Metal)型のセンサデバイスである。
m×λ=2×n×d×cosθ …(式2)
干渉条件は、金属層2および金属層3の形状の主に厚み、金属層2と金属層3の間の距離、金属層2の誘電率(屈折率)、金属層3の誘電率(屈折率)、流路4内の屈折率によって制御可能である。
図13Aと図13Bは、実施の形態2におけるセンサデバイス100の上面断面図である。図13Aと図13Bにおいて、実施の形態1におけるセンサデバイス1と同じ部分には同じ参照番号を付す。実施の形態2におけるセンサデバイス100の側断面図は実施の形態1における図1Bに示すセンサデバイス1と同じである。図14Aと図14Bはそれぞれセンサデバイス100の側断面図および上面断面図である。センサデバイス100には、金属層102の下面102Bと、金属層103の上面103Aと、側壁部111の側面111Aと、側壁部112の側面112Aの4つの面により囲まれた流路104が形成されている。金属層102の下面102Bは流路104の上面を構成し、金属層103の上面103Aは流路104の下面を構成する。側壁部111の側面111Aは流路104の第1の側面を構成し、側壁部112の側面112Aは流路104の第2の側面を構成する。また、流路104は試料62が投入される投入領域115と試料62が排出される排出領域116を有する。投入領域115から排出領域116に向けて流路104の幅すなわち側面111Aと側面112Aとの間隔が徐々に小さくなるように流路104は形成されている。流路104の投入領域115の最前端(図面の左端)の幅W1、排出領域116の最後端(図面の右端)の幅W3、流路104内に位置する任意の場所104aの幅W2の関係は、W1≧W2≧W3となるように流路104が形成されている。流路104に試料62が投入されると試料62中のアナライト8と担体10のアクセプタ7が特異的に結合して凝集体11を形成する。投入領域115から排出領域116に向けて試料62が流れるに従って、凝集体11は排出領域116に向かって移動する。ここで、排出領域116の幅W4は、担体10の径よりも大きく、凝集体11の径より小さい。すなわち、排出領域116の幅W4は、担体10の径以上の第1の所定値よりも大きく、凝集体11の径より小さい第2の所定値以下である。
図16Aと図16Bは、それぞれ実施の形態3におけるセンサデバイス200の側断面図と拡大側断面図である。センサデバイス200の上面図は図1Aに示す実施の形態1におけるセンサデバイス1のそれと同じである。図16Aに示すように、センサデバイス200には、実施の形態1における側壁部21、22と同様の2つの側壁部の2つの側面と、金属層202の下面202Bと、金属層203の上面203Aとの4つの面により囲まれた流路204が形成されている。側壁部の2つの側面は流路204の第1と第2の側面を構成する。金属層202の下面202Bは流路204の上面を構成する。金属層203の上面203Aは流路204の下面を構成する。流路204は試料62が投入される投入領域215と試料62が排出される排出領域216と、それらの間に設けられた領域218を有する。領域218は凝集体11をトラップする凝集体トラップ部である。流路204は投入領域215および領域218(凝集体トラップ部)からなる流路204b(第1の流路)と、排出領域216からなる流路204c(第2の流路)により構成されている。そして、下面202Bと上面203Aとの間隔である流路204の深さのうち、流路204bの深さと流路204cの深さとの関係、すなわち流路204bでの金属層202の下面202Bと金属層203の上面203Aとの間隔D1と流路204cでの金属層202の下面202Bと金属層203の上面203Aとの間隔D2とはD1>D2となるように流路204が形成されている。流路204に試料62が投入されると試料62中のアナライト8と担体10のアクセプタ7が特異的に結合して凝集体11を形成する。投入領域215から排出領域216に向けて試料62が流れるに従って、凝集体11は排出領域216に向かって移動する。
(a)(m1+1/2)×λ=2×n×D1×cosθ、かつ、(m2+1/2)×λ=2×n×D2×cosθ、
(b)m1×λ=2×n×D1×cosθ、かつ、m2×λ=2×n×D2×cosθ
のうちの一方を満たす。
図18Aは実施の形態4におけるセンサデバイス300の上面断面図である。図18Bは図18Aに示すセンサデバイス300の線18B-18Bにおける側断面図である。図18Aと図18Bにおいて、図2Aと図2Bに示す実施の形態1におけるセンサデバイス1と同じ部分には同じ参照番号を付す。センサデバイス300には、側壁部311の側面311Aと、側壁部312の側面312Aと、金属層2の下面2Bと、金属層3の上面3Aの4つの面により囲まれた流路304が形成されている。側壁部311の側面311Aは流路304の第1の側面を構成する、側壁部312の側面312Aは流路304の第2の側面を構成する。金属層2の下面2Bは流路304の上面を構成する。別の金属層3の上面3Aは流路304の下面を構成する。センサデバイス300は、金属層2の下面2Bから金属層3の上面3Aまで側面311A、312Aと平行に延びる複数のピラー313を有する。複数のピラー313は流路304の特定の領域318に設けられており、実施の形態4では円柱状である。複数のピラー313は、円柱状以外の形状であってもよい。互いに隣りあう2本のピラー313の間隙p1と、側壁部311とピラー313の間隙p2と、側壁部312とピラー313の間隙p3は、複数のピラー313と側壁部311、312間の隙間を担体10は通過するが、凝集体11はトラップされるような寸法に設定されている。間隙p1は、互いに隣りあう2本のピラー313の側周面間の距離である。間隙p2は、側壁部311の側面311Aとピラー313の側周面との距離である。間隙p3は、側壁部312の側面312Aとピラー313の側周面との距離である。間隙p1、p2、p3は、担体10の径より大きく、凝集体11の径より小さく設定されている。すなわち、間隙p1、p2、p3は、担体10の径以上の第1の所定値より大きく、凝集体11の径より小さい第2の所定値以下に設定されている。このように、流路304の領域318は凝集体11をトラップする凝集体トラップ部として機能する。なお、複数本のピラー313は、流路304での試料の流れる方向と直角に交差するが、流路304での試料の流れる方向に傾斜して交差するように、側壁部311、312と所定の角度を持って傾斜して延びていてもよい。
図19Aは実施の形態5におけるセンサデバイス400の上面断面図である。図19Bは図19Aに示すセンサデバイス400の線19B-19Bにおける側断面図である。図19Aと図19Bにおいて、図2Aと図2Bに示す実施の形態1におけるセンサデバイス1と同じ部分には同じ参照番号を付す。図19Aと図19Bに示すセンサデバイス400には、側壁部411の側面411Aと、側壁部412の側面412Aと、金属層2の下面2Bと、金属層3の上面3Aの4つの面により囲まれた流路404が形成されている。側壁部411の側面411Aは流路404の第1の側面を構成する。側壁部412の側面412Aは流路404の第2の側面を構成する。金属層2の下面2Bは流路404の上面を構成する。金属層3の上面3Aは流路404の下面を構成する。センサデバイス400は、流路404の特定の領域418に設けられた複数の繊維状物質413を有する。複数の繊維状物質413は互いに絡みあって空隙が形成された網目構造を有する。網目構造の空隙の最小径は、その空隙を担体10は通過するが、凝集体11は通過できないような寸法で設定されている。空隙の最小径は、担体10の径より大きく、凝集体11の径より小さい。すなわち、空隙の最小径は、担体10の径以上の第1の所定値より大きく、凝集体11の径より小さい第2の所定値以下の寸法で形成されている。流路404の特定の領域418には、複数の繊維状物質413が絡みあって空隙が形成された網目構造が設けられている。
図20Aは実施の形態6におけるセンサデバイス500の上面断面図である。図20Bは図20Aに示すセンサデバイス500の線20B-20Bにおける側断面図である。図20Aと図20Bにおいて、図2Aと図2Bに示す実施の形態1におけるセンサデバイス1と同じ部分には同じ参照番号を付す。図20Aと図20Bに示すセンサデバイス500には、側壁部511の側面511Aと、側壁部512の側面512Aと、金属層2の下面2Bと、金属層3の上面3Aの4つの面により囲まれた流路504が形成されている。側壁部511の側面511Aは流路504の第1の側面を構成する。側壁部512の側面512Aは流路504の第2の側面を構成する。金属層2の下面2Bは流路504の上面を構成する。金属層3の上面3Aは流路504の下面を構成する。流路504の側面511A、512Aは、特定の領域518a、518bにおいて凹んでいる凹部511P、512Pを有するように蛇行している。試料62が、流路504を流れている間に領域518a、518bに形成された凹部511P、512Pに凝集体11がトラップされる。流路504の特定の領域518a、518bは凝集体11をトラップする凝集体トラップ部として機能する。なお、側面511Aと側面512Aのどちらか一方の側面のみが凹部を有するように蛇行していてもよい。
図21Aと図21Bはそれぞれ実施の形態7におけるセンサデバイス700の断面図と下面斜視図である。実施の形態7におけるセンサデバイス700は、ATR(Attenuated Total Reflection)型のセンサデバイスである。
2,3,102,103,202,203,602,702 金属層
4,104,204,304,404,504,704 流路
7,7a,7b,604 アクセプタ
8 アナライト
9 非特異的検体
10,10a,10b 担体
11 凝集体
15,115,215,715 投入領域
16,116,216,716 排出領域
18,118,218,318,418,518a,518b,718 領域(凝集体トラップ部)
21,22,111,112,311,312,411,412,511,512 側壁部
23 フィルター
24 注入口
25,26 貯留部
31a,31b 超音波発生源
32 ヒータ(加熱源)
33a,33b 磁界発生源
61 媒質
62 試料
91,93 電磁波
92 電磁波源
204b 流路(第1の流路)
204c 流路(第2の流路)
313,313a,313b ピラー
Claims (18)
- アナライトを検出するように構成されたセンサデバイスであって、
上方より電磁波が入射されるように構成された上面と、下面と、第1の側面と、前記第1の側面に対向する第2の側面とに囲まれて、前記試料が流れるように構成されて、担体が配置されるように構成された流路と、
前記流路の前記上面および前記下面の少なくとも一方の少なくとも一部に設けられた金属層と、
を備え、
前記担体の表面には前記アナライトと特異的結合して凝集体を生成する複数のアクセプタが固定されるように構成されており、
前記流路は、前記アナライトが偏在するように構成された凝集体トラップ部を有する、センサデバイス。 - アナライトを検出するように構成されたセンサデバイスであって、
上方より電磁波が入射されるように構成された上面と、第1の側面と、前記第1の側面に対向する第2の側面とに囲まれて、前記試料が流れるように構成されて、担体が配置されるように構成された流路と、
前記流路の前記上面の少なくとも一部領域に設けられた金属層と、
を備え、
前記担体の表面には前記アナライトと特異的結合し凝集体を生成する複数のアクセプタが固定されるように構成されており、
前記流路は、前記アナライトが偏在するように構成された凝集体トラップ部を有する、センサデバイス。 - 前記担体は前記流路内に物理吸着固定されている、請求項1または2に記載のセンサデバイス。
- 前記流路は前記凝集体トラップ部と異なる別の領域を有し、
前記担体の前記流路の前記凝集体トラップ部での存在密度は、前記流路の前記別の領域での存在密度よりも高い、請求項1または2に記載のセンサデバイス。 - 前記アクセプタは、前記流路内の前記凝集体トラップ部における前記金属層の表面に化学吸着固定されるように構成されている、請求項1または2に記載のセンサデバイス。
- 前記凝集体の径は前記担体の径より大きく、
前記凝集体トラップ部は、前記担体を通過させて前記凝集体は通過させない、請求項1または2に記載のセンサデバイス。 - 前記流路は、前記試料が投入されて前記凝集体トラップ部を流れるように構成された投入領域と、前記凝集体トラップ部を流れた前記試料が排出されるように構成された排出領域とをさらに有し、
前記流路の前記第1の側面と前記第2の側面の間隔が前記投入領域から前記排出領域へ向けて小さくなり、
前記排出領域での前記第1の側面と前記第2の側面の間隔は前記担体の前記径より大きくかつ前記凝集体の前記径より小さい、請求項6に記載のセンサデバイス。 - 前記凝集体トラップ部は、前記流路内に配置された複数のピラーを有し、
前記複数のピラーのうちの互いに隣りあう2つのピラーの間隙は前記担体の前記径よりも大きくかつ前記凝集体の前記径より小さい、請求項6に記載のセンサデバイス。 - 前記凝集体トラップ部は、前記流路内に配置された網目構造体を有し、
前記網目構造体の網目の最小径は前記担体の前記径より大きくかつ前記凝集体の前記径より小さい、請求項6に記載のセンサデバイス。 - 前記網目構造体はSiO2ナノファイバの繊維状物質からなる、請求項9に記載のセンサデバイス。
- 前記流路は、前記試料が投入されて前記凝集体トラップ部を流れるように構成された投入領域と、前記凝集体トラップ部を流れた前記試料が排出されるように構成された排出領域とをさらに有し、
前記流路は、前記凝集体トラップ部から前記投入領域側に設けられた第1の流路と、前記凝集体トラップ部から前記排出領域側に設けられた第2の流路とをさらに有し、
前記凝集体の径は前記担体の径より大きく、
前記第1の流路における前記上面と前記下面の間隔は前記凝集体の前記径よりも大きく、
前記第2の流路における前記上面と前記下面の間隔は前記担体の径よりも大きくかつ前記凝集体の前記径より小さい、請求項1に記載のセンサデバイス。 - 前記第1の流路の前記上面と前記下面との間隔D1および前記第2の流路の前記上面と前記下面との間隔D2は、整数m1、m2と、電磁波の真空中での波長λと、前記流路内の屈折率nと前記電磁波の入射角θとで表される以下の関係(a)(b)、
(a)(m1+1/2)×λ=2×n×D1×cosθ、かつ、(m2+1/2)×λ=2×n×D2×cosθ、
(b)m1×λ=2×n×D1×cosθ、かつ、m2×λ=2×n×D2×cosθ
のうちの一方を満たす、請求項11に記載のセンサデバイス。 - 前記流路の前記第1の側面及び前記第2の側面の少なくとも一方が凹部を有するように蛇行して形成されており、
前記凝集体トラップ部が前記凹部である請求項1に記載のセンサデバイス。 - 前記流路は、前記凝集体トラップ部を流れた試料が排出されるように構成された排出領域をさらに有し、
前記排出領域の近傍に設けられて前記試料を吸収するように構成された吸収体をさらに備えた、請求項1に記載のセンサデバイス。 - 前記流路内に超音波を印加する超音波発生源をさらに備えた、請求項1または2に記載のセンサデバイス。
- 前記流路内を加熱する加熱源をさらに備えた、請求項1または2に記載のセンサデバイス。
- 前記担体は磁性体であり、
前記流路内に磁界が印加されるように構成されている、請求項1または2に記載のセンサデバイス。 - 前記電磁波は、可視光帯を含む光である、請求項1または2に記載のセンサデバイス。
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JP2016538570A (ja) * | 2013-10-18 | 2016-12-08 | サントル ナショナル ドゥ ラ ルシェルシュ シアンティフィク | 試料観察用のコントラスト増幅支持体、その製造方法および用途 |
JP2020159811A (ja) * | 2019-03-26 | 2020-10-01 | 東芝テック株式会社 | 検出センサ、測定装置、及び試料調製装置 |
JP2020159814A (ja) * | 2019-03-26 | 2020-10-01 | 東芝テック株式会社 | 検出装置 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011136344A1 (ja) * | 2010-04-28 | 2011-11-03 | パナソニック電工株式会社 | 化学センサ |
WO2011142118A1 (ja) * | 2010-05-12 | 2011-11-17 | パナソニック株式会社 | プラズモンセンサと、この使用方法および製造方法 |
WO2011142110A1 (ja) * | 2010-05-12 | 2011-11-17 | パナソニック株式会社 | プラズモンセンサとその使用方法及び製造方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5515864A (en) * | 1994-04-21 | 1996-05-14 | Zuckerman; Ralph | Method and apparatus for the in vivo measurement of oxygen concentration levels by the indirect determination of fluoescence lifetime |
US6327410B1 (en) * | 1997-03-14 | 2001-12-04 | The Trustees Of Tufts College | Target analyte sensors utilizing Microspheres |
IL148088A0 (en) * | 1999-08-13 | 2002-09-12 | Us Genomics Inc | Methods and apparatuses for stretching polymers |
US6696022B1 (en) * | 1999-08-13 | 2004-02-24 | U.S. Genomics, Inc. | Methods and apparatuses for stretching polymers |
US6670115B1 (en) | 1999-11-24 | 2003-12-30 | Biotronic Technologies, Inc. | Devices and methods for detecting analytes using electrosensor having capture reagent |
US7790443B2 (en) * | 2002-08-27 | 2010-09-07 | Vanderbilt University | Bioreactors with substance injection capacity |
WO2004020573A1 (en) * | 2002-08-27 | 2004-03-11 | Vanderbilt University | Bioreactors with an array of chambers and a common feed line |
JP4224641B2 (ja) | 2003-11-28 | 2009-02-18 | 国立大学法人東京工業大学 | 局在化表面プラズモンセンサ、センシング装置およびセンシング方法 |
JP3978440B2 (ja) * | 2004-05-31 | 2007-09-19 | 財団法人川村理化学研究所 | シリカ/ポリマー/金属複合材料及びその製造方法 |
WO2005116140A1 (ja) * | 2004-05-31 | 2005-12-08 | Kawamura Institute Of Chemical Research | 複合ナノファイバ、複合ナノファイバ会合体、複合構造体及びこれらの製造方法 |
US7298472B2 (en) * | 2004-12-28 | 2007-11-20 | Rheodyne, Llc | Fluid analysis apparatus |
JP4920674B2 (ja) * | 2005-03-18 | 2012-04-18 | キヤノン株式会社 | 構造体、分離素子、分離装置、捕捉素子、検出装置、及びその製造方法、ならびに標的物質の分離方法及び検出方法 |
GB0508983D0 (en) * | 2005-05-03 | 2005-06-08 | Oxford Gene Tech Ip Ltd | Cell analyser |
US8510056B2 (en) * | 2005-10-24 | 2013-08-13 | Western Michigan University Research Foundation | Method and integrated microsystem for detecting biomolecules in liquid |
US20080260586A1 (en) * | 2005-11-07 | 2008-10-23 | Koninklijke Philips Electronics, N.V. | Pillar Based Biosensor and Method of Making the Same |
US7998708B2 (en) * | 2006-03-24 | 2011-08-16 | Handylab, Inc. | Microfluidic system for amplifying and detecting polynucleotides in parallel |
US7359048B2 (en) * | 2006-04-28 | 2008-04-15 | Hewlett-Packard Development Company, L.P. | Raman signal-enhancing structures and devices |
JP5397577B2 (ja) * | 2007-03-05 | 2014-01-22 | オムロン株式会社 | 表面プラズモン共鳴センサ及び当該センサ用チップ |
KR100860701B1 (ko) * | 2007-03-14 | 2008-09-26 | 한양대학교 산학협력단 | 장거리 표면 플라즈몬 이중 금속 광도파로 센서 |
JP5295149B2 (ja) * | 2010-02-25 | 2013-09-18 | 富士フイルム株式会社 | 生体物質分析方法並びにそれに用いられる生体物質分析セル、チップおよび装置 |
-
2013
- 2013-02-20 WO PCT/JP2013/000924 patent/WO2013132761A1/ja active Application Filing
- 2013-02-20 JP JP2014503445A patent/JP6019415B2/ja active Active
- 2013-02-20 CN CN201380012384.2A patent/CN104272089B/zh active Active
- 2013-02-20 US US14/369,940 patent/US9829486B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011136344A1 (ja) * | 2010-04-28 | 2011-11-03 | パナソニック電工株式会社 | 化学センサ |
WO2011142118A1 (ja) * | 2010-05-12 | 2011-11-17 | パナソニック株式会社 | プラズモンセンサと、この使用方法および製造方法 |
WO2011142110A1 (ja) * | 2010-05-12 | 2011-11-17 | パナソニック株式会社 | プラズモンセンサとその使用方法及び製造方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016538570A (ja) * | 2013-10-18 | 2016-12-08 | サントル ナショナル ドゥ ラ ルシェルシュ シアンティフィク | 試料観察用のコントラスト増幅支持体、その製造方法および用途 |
US10444485B2 (en) | 2013-10-18 | 2019-10-15 | Centre National De La Recherche Scientifique | Contrast amplifying support for the observation of a sample, production methods thereof and uses thereof |
JP2020159811A (ja) * | 2019-03-26 | 2020-10-01 | 東芝テック株式会社 | 検出センサ、測定装置、及び試料調製装置 |
JP2020159814A (ja) * | 2019-03-26 | 2020-10-01 | 東芝テック株式会社 | 検出装置 |
JP7229828B2 (ja) | 2019-03-26 | 2023-02-28 | 東芝テック株式会社 | 検出装置 |
JP7278826B2 (ja) | 2019-03-26 | 2023-05-22 | 東芝テック株式会社 | 検出センサ、測定装置、及び試料調製装置 |
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US9829486B2 (en) | 2017-11-28 |
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JPWO2013132761A1 (ja) | 2015-07-30 |
CN104272089B (zh) | 2017-05-10 |
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