WO2016084554A1 - センサ装置 - Google Patents
センサ装置 Download PDFInfo
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- WO2016084554A1 WO2016084554A1 PCT/JP2015/080862 JP2015080862W WO2016084554A1 WO 2016084554 A1 WO2016084554 A1 WO 2016084554A1 JP 2015080862 W JP2015080862 W JP 2015080862W WO 2016084554 A1 WO2016084554 A1 WO 2016084554A1
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- idt electrode
- film
- sensor device
- region
- cover member
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/022—Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2462—Probes with waveguides, e.g. SAW devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0255—(Bio)chemical reactions, e.g. on biosensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0423—Surface waves, e.g. Rayleigh waves, Love waves
Definitions
- the present invention relates to a sensor device capable of measuring the properties of a sample liquid or components contained in the sample liquid.
- a reaction part that reacts with a component contained in a specimen of a specimen liquid is provided on a piezoelectric substrate, and the specimen is measured by measuring changes in surface acoustic waves that have propagated through the reaction part. It detects the properties or components of the liquid.
- a measurement method using a surface acoustic wave element or the like has an advantage that it is easy to simultaneously detect a plurality of test items as compared with other measurement methods (for example, an enzyme method).
- the upper surface of the piezoelectric substrate has a pair of IDT electrodes and the region of the reaction part existing between them at the same height, so that the energy of the surface acoustic wave is sufficiently concentrated on the reaction part. As a result, it was difficult to detect the detection object in the sample with high sensitivity.
- a sensor device includes an element substrate, a reaction portion that is located on the upper surface of the element substrate, has an immobilized film, and detects a specimen, and an elastic wave that propagates toward the reaction portion
- a detection unit having a first IDT electrode that generates the first IDT electrode and a second IDT electrode that receives the elastic wave that has passed through the reaction unit, and a protective film that covers the first IDT electrode and the second IDT electrode
- the element substrate has a third region between a first region in which the first IDT electrode and the second IDT electrode are located and a second region in which the reaction part is located. At least a portion is lower than the first region and the second region.
- the element substrate is a third region between the first region where the first IDT electrode and the second IDT electrode are located and the second region where the reaction part is located. And at least part of the third region is lower than the first region and the second region.
- FIG. 2 is an exploded plan view of the sensor device of FIG. 1. It is a top view which shows the manufacturing process of the sensor apparatus of FIG. It is a top view which shows the detection element of the sensor apparatus of FIG. It is sectional drawing which shows the detection element of the sensor apparatus of FIG. It is sectional drawing which expands and shows a part of sensor device of FIG. 5 is a schematic view showing a manufacturing process of the detection element 3.
- a sensor device 100 according to an embodiment of the present invention will be described with reference to FIGS.
- the sensor device 100 mainly includes a first cover member 1, an intermediate cover member 1A, a second cover member 2, and a detection element 3, as shown in FIG.
- the sensor device 100 includes an inflow portion 14 into which the sample liquid flows, an inflow portion 14, and the intermediate cover member 1 ⁇ / b> A and the second cover member 2. And a flow path 15 extending to at least the reaction section 13.
- the widths of the intermediate cover member 1 ⁇ / b> A and the second cover member 2 are larger than the width of the detection element 3. Thereby, it is possible to flow the sample liquid so as to effectively cover the entire surface of the detection element 3.
- FIG. 1C is a cross-sectional view of FIG. 1A. From the top, the cross section cut along the line aa, the cross section cut along the line bb, and the cross section cut along the line cc. A cross section is shown. The inflow portion 14 is formed so as to penetrate the second cover member 2 in the thickness direction.
- the 1st cover member 1 is flat form as shown to Fig.1 (a), FIG.1 (b), and Fig.2 (a).
- the thickness is, for example, 0.1 mm to 1.5 mm.
- the planar shape of the first cover member 1 is generally rectangular.
- the length of the first cover member 1 in the length direction is, for example, 1 cm to 8 cm, and the length in the width direction is, for example, 1 cm to 3 cm.
- the material of the first cover member 1 for example, glass epoxy, paper, plastic, celluloid, ceramics, nonwoven fabric, glass, or the like can be used. It is preferable to use plastic from the viewpoint of combining the necessary strength and cost.
- the terminals 6 are formed on both sides of the detection element 3 in the width direction on the upper surface of the intermediate cover member 1A. Specifically, at least a part of the terminal 6 for the detection element 3 is arranged closer to the inflow portion 14 than the end portion of the detection element 3 on the inflow portion 14 side. Further, in the four terminals 6 arranged on one side of the detection element 3 with respect to the longitudinal direction of the flow path 15, the lengths of the wirings 7 connected to the two outer terminals 6 are substantially the same. The lengths of the wirings 7 connected to the two inner terminals 6 are substantially the same. According to this, it is possible to suppress the signal obtained by the detection element 3 from varying depending on the length of the wiring 7.
- the wiring 7 is a ground (grounding) wiring and the other wiring 7 having substantially the same length is a signal wiring and is connected so as to generate a potential difference between these wirings, signal variation is suppressed. It becomes possible to improve the reliability of detection.
- the terminal 6 and the external measuring device are electrically connected. Further, the terminal 6 and the detection element 3 are electrically connected through a wiring 7 or the like.
- a signal from the external measuring device is input to the sensor device 100 via the terminal 6, and a signal from the sensor device 100 is output to the external measuring device via the terminal 6.
- intermediate cover member 1A In the present embodiment, as shown in FIG. 1B, the intermediate cover member 1 ⁇ / b> A is positioned side by side with the detection element 3 on the upper surface of the first cover member 1. Further, as shown in FIGS. 1A and 3C, the intermediate cover member 1A and the detection element 3 are located with a gap therebetween. The intermediate cover member 1 ⁇ / b> A and the detection element 3 may be arranged so that their side portions are in contact with each other.
- the intermediate cover member 1A has a flat frame shape having a recess forming portion 4 on a flat plate, and has a thickness of, for example, 0.1 mm to 0 mm. .5 mm.
- the recess forming portion 4 is a portion located on the downstream side of the first upstream portion 1Aa, as shown in FIG.
- the element placement portion 5 is formed by the first cover member 1 and the intermediate cover member 1 ⁇ / b> A. That is, the upper surface of the first cover member 1 located inside the recess forming portion 4 is the bottom surface of the element placement portion 5, and the inner wall of the recess forming portion 4 is the inner wall of the element placement portion 5.
- the intermediate cover member 1 ⁇ / b> A does not exist on the first cover member 1 downstream of the detection element 3. Accordingly, it is possible to suppress or reduce the generation of bubbles in the intermediate cover member 1A on the downstream side of the first upstream portion 1Aa. As a result, it is possible to allow the sample liquid to reach the detection element 3 in a liquid state without including bubbles, and to improve the detection sensitivity or accuracy.
- the material of the intermediate cover member 1A for example, resin (including plastic), paper, nonwoven fabric, or glass can be used. More specifically, it is preferable to use a resin material such as a polyester resin, a polyethylene resin, an acrylic resin, or a silicone resin.
- a resin material such as a polyester resin, a polyethylene resin, an acrylic resin, or a silicone resin.
- the material of the first cover member 1 and the material of the intermediate cover member 1A may be the same or different.
- the intermediate cover member 1A has a first upstream portion 1Aa.
- the detection element 3 is the first It is located downstream from 1 upstream part 1Aa. According to this, the sample liquid flowing on the detection element 3 through the first upstream portion 1Aa in the flow path 15 flows to the detection element 3 because an amount exceeding the amount necessary for measurement flows downstream. An appropriate amount of the sample liquid can be supplied.
- the second cover member 2 covers the detection element 3 and is joined to the first cover member 1 and the intermediate cover member 1A.
- the 2nd cover member 2 has the 3rd board
- the material of the second cover member 2 for example, resin (including plastic), paper, nonwoven fabric, or glass can be used. More specifically, it is preferable to use a resin material such as a polyester resin, a polyethylene resin, an acrylic resin, or a silicone resin.
- the material of the first cover member 1 and the material of the second cover member 2 may be the same. As a result, it is possible to suppress the deformation caused by the difference between the thermal expansion coefficients of each other.
- the second cover member 2 may be configured to be joined only to the intermediate cover member 1A, or may be joined to both the first cover member 1 and the intermediate cover member 1A.
- the third substrate 2a is bonded to the upper surface of the intermediate cover member 1A as shown in FIGS. 1 (c), 3 (c), and 3 (d).
- the third substrate 2a has a flat plate shape, and its thickness is, for example, 0.1 mm to 0.5 mm.
- the fourth substrate 2b is bonded to the upper surface of the third substrate 2a.
- the fourth substrate 2b has a flat plate shape, and its thickness is, for example, 0.1 mm to 0.5 mm. Then, by joining the fourth substrate 2b to the third substrate 2a, the flow path 15 is formed on the lower surface of the second cover member 2 as shown in FIG.
- the flow path 15 extends from the inflow part 14 to at least a region immediately above the reaction part 13, and the cross-sectional shape is, for example, a rectangular shape.
- substrate 2b are good also as the same material, and you may use what integrated both.
- the end portion of the flow path 15 does not include the intermediate cover member 1A and the third substrate 2a, and the gap between the fourth substrate 2b and the first cover member 1 Functions as the exhaust hole 18.
- the exhaust hole 18 is for releasing air in the flow path 15 to the outside.
- the shape of the opening of the exhaust hole 18 may be any shape, such as a circular shape or a rectangular shape, as long as the air in the flow path 15 can be extracted. For example, if the opening is a circular exhaust hole 18, the diameter is 2 mm or less, and if the opening is a rectangular exhaust hole 18, one side is 2 mm or less.
- the first cover member 1, the intermediate cover member 1A, and the second cover member 2 can all be formed of the same material. According to this, since the thermal expansion coefficients of the respective members can be substantially uniform, the deformation of the sensor device 100 due to the difference in the thermal expansion coefficient of each member is suppressed.
- a biomaterial may be applied to the reaction unit 13, but some of them may be easily altered by external light such as ultraviolet rays.
- an opaque material having a light shielding property may be used as the material for the first cover member 1, the intermediate cover member 1 ⁇ / b> A, and the second cover member 2, an opaque material having a light shielding property may be used.
- the second cover member 2 constituting the flow path 15 may be formed of a material that is nearly transparent. In this case, since the state of the sample liquid flowing in the flow channel 15 can be visually confirmed, it can be used in combination with a detection method using light.
- Detecting element 3 The detection element 3 according to this embodiment will be described with reference to FIGS. 1 to 6, particularly FIGS. 4 to 6.
- FIG. 6 is an enlarged cross-sectional view showing a part of the sensor device of FIG. 5, (a) is an enlarged view of a main part of the detection element of FIG. 5 (b), and (b) is (a) It is the figure which expanded a part of) further.
- the detection element 3 is roughly an element substrate 10 a positioned on the upper surface of the first cover member 1, and an object to be detected that is positioned on the upper surface of the element substrate 10 a and included in the sample liquid. It has at least one detection unit 10b that detects an object (detection target).
- the detection element 3 of the present embodiment has an element substrate 10 a and an immobilization film 13 a located on the upper surface of the element substrate 10 a to detect an object to be detected.
- Detection unit 10b having a reaction unit 13 that performs the first IDT (InterDigital (Transducer) electrode 11 that generates an elastic wave that propagates toward the reaction unit 13, and a second IDT electrode 12 that receives the elastic wave that has passed through the reaction unit 13.
- a protective film 28 covering the first IDT electrode 11 and the second IDT electrode 12.
- the element substrate 10a has a third region A3 between the first region A1 where the first IDT electrode 11 and the second IDT electrode 12 are located and the second region A2 where the reaction unit 13 is located, At least a part of the third region A3 is lower than the first region A1 and the second region A2.
- the detection unit 10b includes a protective film 28, a first extraction electrode 19, a second extraction electrode 20, and the like in addition to the first IDT electrode 11, the reaction unit 13, and the second IDT electrode 12.
- the element substrate 10a is made of a single crystal substrate having piezoelectricity such as quartz, lithium tantalate (LiTaO 3 ) single crystal, or lithium niobate (LiNbO 3 ) single crystal.
- the planar shape and various dimensions of the element substrate 10a may be set as appropriate.
- the thickness of the element substrate 10a is, for example, 0.3 mm to 1 mm.
- the element substrate 10a includes a first region A1 where the first IDT electrode 11 and the second IDT electrode 12 are located, a second region A2 where the reaction unit 13 is located, and There is a third region A3 between the first region A1 and the second region A2, and at least a part of the third region A3 is lower than the first region A1 and the second region A2.
- surface acoustic waves SAW: SurfaceSAcoustic Wave
- the third region A3 is a recess A3a, and the recess A3a becomes narrower in a side sectional view toward the bottom.
- the boundary with the immobilization film 13a gradually changes with respect to the SAW propagation direction, so that the reflection of the SAW at the boundary is reduced, and as a result, the electric signal Loss is reduced.
- the bottom of the recess A3a which is at least part of the third region A3, is a SAW that propagates between the first IDT electrode 11 and the second IDT electrode 12 more than the upper surface of the first region A1 and the upper surface of the second region A2.
- the wavelength of ⁇ is ⁇
- it can be set low within a range of 0.02 ⁇ or less, for example.
- the surface roughness of the bottom part of recessed part A3a can be set larger than the surface roughness of the upper surface of the fixed film
- the surface roughness of each component may be determined using the arithmetic average roughness Ra.
- a protective film 28 or other film is provided on the measurement target, for example, SEM (scanning) What is necessary is just to measure by carrying out the graphic analysis of the cross-sectional shape in the cross-sectional photograph using analysis techniques, such as a transmission electron microscope) and TEM (transmission electron microscope).
- analysis techniques such as a transmission electron microscope
- TEM transmission electron microscope
- the measurement target can be directly measured, the measurement may be performed using a normal contact type or non-contact type surface roughness measuring machine. The same applies to the following unless otherwise specified.
- the surface roughness of the upper surface of the immobilizing film 13a is set larger than the surface roughness of the region where the immobilizing film 13a is located in the element substrate 10a. According to this, for example, aptamers and antibodies described later are immobilized on the surface of the element substrate 10a, whereas the aptamers and antibodies can be highly bonded to the surface of the immobilization film 13a. Can be fixed. As a result, it is possible to improve the detection sensitivity of the detection object.
- the first IDT electrode 11 has a pair of comb electrodes.
- Each comb electrode has two bus bars facing each other and a plurality of electrode fingers extending from each bus bar to the other bus bar side.
- the pair of comb electrodes are arranged so that a plurality of electrode fingers mesh with each other.
- the second IDT electrode 12 is configured similarly to the first IDT electrode 11.
- the first IDT electrode 11 and the second IDT electrode 12 constitute a transversal IDT electrode.
- the first IDT electrode 11 is for generating a predetermined surface acoustic wave
- the second IDT electrode 12 is for receiving the SAW generated by the first IDT electrode 11.
- the first IDT electrode 11 and the second IDT electrode 12 are arranged on the same straight line so that the second IDT electrode 12 can receive the SAW generated in the first IDT electrode 11.
- the frequency characteristics can be designed using parameters such as the number of electrode fingers of the first IDT electrode 11 and the second IDT electrode 12, the distance between adjacent electrode fingers, and the cross width of the electrode fingers.
- the SAW excited by the IDT electrode there are various vibration modes.
- a transverse wave vibration mode called SH wave is used.
- the frequency of SAW can be set within a range of, for example, several megahertz (MHz) to several gigahertz (GHz). In particular, when the frequency is set from several hundred MHz to 2 GHz, it is practical, and downsizing of the detection element 3 and thus downsizing of the sensor device 100 can be realized.
- the thickness and length of a predetermined component are described by taking as an example the case where the center frequency of SAW is several hundred MHz.
- the first IDT electrode 11 and the second IDT electrode 12 may have a single-layer structure made of, for example, a gold thin film layer, or a three-layer structure of a titanium layer, a gold layer and a titanium layer from the element substrate 10a side, or a chromium layer or a gold layer.
- a multi-layer structure such as a three-layer structure of a chromium layer may be used.
- the thickness of the first IDT electrode 11 and the second IDT electrode 12 may be set in the range of 0.005 ⁇ to 0.015 ⁇ , for example.
- An elastic member for suppressing SAW reflection may be provided outside the first IDT electrode 11 and the second IDT electrode 12 in the SAW propagation direction (width direction).
- reaction unit 13 As shown in FIGS. 4 and 6, the reaction unit 13 is provided between the first IDT electrode 11 and the second IDT electrode 12.
- the reaction unit 13 includes an immobilized film 13a (for example, a metal film) formed on the upper surface of the element substrate 10a, and a reactant that reacts with an object to be detected that is immobilized on the upper surface of the immobilized film 13a. And have.
- the reactive substance may be appropriately selected according to the detection target to be detected. For example, when a specific cell or biological tissue in the sample liquid is to be detected, an aptamer made of a nucleic acid or a peptide may be used. it can.
- the reaction between the reaction substance and the detection object may be, for example, a reaction substance and the detection object bonded together such as a chemical reaction or an antigen-antibody reaction, and is not limited to these reactions.
- the detected object may be bound to the reactive substance by the interaction between the detected object and the reactive substance, or the detected object may be adsorbed to the reactive substance.
- any reaction substance can be used as a reaction substance in the present embodiment as long as the characteristics of the surface acoustic wave are changed according to the type and content of the detected substance due to the presence of the reaction substance. It can be used for the part 13.
- the reaction unit 13 is for causing a reaction with an object to be detected in the sample liquid. Specifically, when the sample liquid comes into contact with the reaction unit 13, a specific object to be detected in the sample liquid is detected. It binds to the aptamer corresponding to the detected substance.
- the immobilization film 13a may be, for example, a single-layer structure made of a gold layer, a two-layer structure of a gold layer positioned on the titanium layer and the titanium layer, or a position positioned on the chromium layer and the chromium layer. It can be a multi-layer structure such as a two-layer structure of gold layers.
- the material of the immobilization film 13a may be the same as the material of the first IDT electrode 11 and the second IDT electrode 12. According to this, both can be formed in the same process.
- the material of the fixing film 13a may be an oxide film such as SiO 2 or TiO 2 instead of the above metal film.
- the sensor device 100 when the first IDT electrode 11, the second IDT electrode 12, and the reaction unit 13 arranged along the width direction of the flow path are set as one set, the sensor device 100 according to the present embodiment has a sensor device 100 as illustrated in FIG. 4. Two sets are provided. Thereby, the detection object which reacts with one reaction part 13 is set to be different from the detection object which reacts with the other reaction part 13, thereby detecting two kinds of detection objects with one sensor device. Can be performed.
- the upper surface of the immobilization film 13a is the upper surface of the first region A1 where the first IDT electrode 11 and the second IDT electrode 12 are located among the upper surface of the element substrate 10a. Higher than. According to this, in the reaction unit 13, the SAW energy propagating between the first IDT electrode 11 and the second IDT electrode 12 is easily concentrated on the immobilization film 13a, so that the detection object can be detected with high sensitivity. Become.
- the upper surface of the immobilization film 13a is lower than at least one of the upper surface of the first IDT electrode 11 and the upper surface of the second IDT electrode 12, as shown in FIG. 6B. According to this, since the SAW energy propagating between the first IDT electrode 11 and the second IDT electrode 12 tends to concentrate on the immobilization film 13a in the reaction unit 13, the detection object is detected with higher sensitivity. It becomes possible.
- the upper surface of the immobilization film 13 a can be set lower than the upper surface of the first IDT electrode 11 and the upper surface of the second IDT electrode 12 in a range of 0.01 ⁇ or less. . According to this, since the SAW energy propagating between the first IDT electrode 11 and the second IDT electrode 12 is easily concentrated on the upper surface of the immobilization film 13a in the reaction unit 13, the detection of the detection object with high sensitivity is possible. Is possible.
- the immobilization film 13a has a shorter distance from the lower end than the upper end at the end of at least one of the first IDT electrode 11 and the second IDT electrode 12 in a side sectional view. Furthermore, the immobilization film 13a is inclined so as to approach the one side as it goes from the upper end to the lower end at the end of at least one of the first IDT electrode 11 and the second IDT electrode 12 in a side sectional view. is doing. According to this, in the vicinity of the upper surface of the element substrate 10a, the boundary with the immobilization film 13a gradually changes with respect to the SAW propagation direction, so that the reflection of the surface acoustic wave at the boundary is reduced, and as a result Signal loss is reduced.
- the inclination angle at the end of the immobilization film 13a can be set smaller than the inclination angle of the protective film 28 described later.
- the thickness of the immobilization film 13a may be set in the range of 0.005 ⁇ to 0.015 ⁇ , for example.
- the thickness of the immobilization film 13a is smaller than at least one of the thickness of the first IDT electrode 11 and the thickness of the second IDT electrode 12, as shown in FIG. According to this, even when the thickness of the immobilization film 13a is relatively thin, it is possible to reduce the loss of SAW energy propagating between the first IDT electrode 11 and the second IDT electrode 12 in the reaction unit 13. become.
- the detection object can be detected with high sensitivity.
- the surface roughness of the upper surface of the immobilization film 13a is larger than at least one of the surface roughness of the upper surface of the first IDT electrode 11 and the surface roughness of the upper surface of the second IDT electrode 12. According to this, in the reaction part 13, an aptamer, an antibody, etc. can be fixed with high density, and it becomes possible to improve detection sensitivity more.
- the surface roughness of the upper surface of the immobilizing film 13a may be set in the range of, for example, 2.0 to 5.0 nm as the arithmetic average roughness Ra, and the upper surface to be measured is set to a normal contact type or non-contact type. What is necessary is just to measure using a surface roughness measuring machine.
- the surface roughness of the upper surface of the first IDT electrode 11 and the upper surface of the second IDT electrode 12 is a normal contact with the upper surface to be measured at any one of the comb electrode portions or the portion connecting them. What is necessary is just to measure using a surface roughness measuring machine of a formula or a non-contact type.
- the protective film 28 is located on the upper surface of the element substrate 10 a and covers the first IDT electrode 11 and the second IDT electrode 12. As a result, it is possible to prevent the sample liquid from coming into contact with the first IDT electrode 11 and the second IDT electrode 12, and to reduce corrosion due to oxidation of the IDT electrode.
- the material of the protective film 28 include silicon oxide, aluminum oxide, zinc oxide, titanium oxide, silicon nitride, and silicon. These materials only have to be used as the main component having the largest mass ratio in the protective film 28, and are not judged as materials when they are mixed in as a very small amount of impurities.
- the protective film 28 is formed between at least one of the first IDT electrode 11 and the second IDT electrode 12 and the reaction portion 13 (immobilized film 13a), that is, in the third region. It is also located at A3. According to this, it is possible to suppress the side portion of the IDT electrode on the immobilization film 13a side from coming into contact with the sample liquid.
- the protective film 28 is located away from the reaction portion 13 (immobilization film 13a) without being in contact therewith. According to this, the influence which it has on the sensitivity with respect to SAW in the reaction part 13 (immobilization film
- the protective film 28 is in the third region A3 and is located between at least one of the first IDT electrode 11 and the second IDT electrode 12 and the recess A3a. According to this, the presence of the protective film 28 suppresses an electrical direct wave generated between the first IDT electrode 11 and the second IDT electrode 12, thereby reducing signal noise.
- the protective film 28 has a reaction section 13 (fixed) at the lower end rather than the upper end in the end section on the reaction section 13 (immobilized film 13 a) side in a side sectional view.
- the distance to the chemical film 13a) is short.
- the side sectional view shows a cross section obtained by cutting FIG. 1A along the aa line or a direction perpendicular to the line aa. It means the state seen from the side.
- the protective film 28 is located between at least one of the first IDT electrode 11 and the second IDT electrode 12 and the reaction part 13 with the end part on the reaction part 13 side.
- the protective film 28 has a reaction portion 13 (fixed) as it goes from the upper end to the lower end at the end portion on the reaction portion 13 (immobilization film 13 a) side in a side sectional view. It inclines so that it may approach the chemical film 13a side. Thereby, it can suppress more effectively that a sample liquid contacts the 1st IDT electrode 11 and the 2nd IDT electrode 12.
- the protective film 28 is formed so as to cover the upper surface of the element substrate 10a, the stability of the coupling with the element substrate 10a is improved.
- the thickness of the protective film 28 may be set in the range of 0.001 ⁇ to 0.05 ⁇ , for example.
- the thickness of the protective film 28 may be measured at a portion that does not cover the first IDT electrode 11 and the second IDT electrode 12, but measurement at other portions is not excluded.
- the thickness of the protective film 28 may be smaller than the thickness of the first IDT electrode 11 and the thickness of the second IDT electrode 12. According to this, the influence of the protective film 28 on the SAW propagating between the first IDT electrode 11 and the second IDT electrode 12 can be reduced, and the loss of SAW energy can be reduced.
- at least a part of the upper surface of the protective film 28 may be set lower than the upper surface of the first IDT electrode 11 and the upper surface of the second IDT electrode 12.
- each of the first IDT electrode 11 and the second IDT electrode 12 has a plurality of electrode fingers that are located apart from each other, and the protective film 28 is formed as shown in FIG.
- the two adjacent electrode fingers of the plurality of electrode fingers for example, the electrode fingers 12a and 12b, and the element substrate 10a located between these two electrode fingers are straddled ( Are connected). According to this, it is possible to suppress a short circuit between the plurality of electrode fingers of the IDT electrode due to the sample liquid.
- the first extraction electrode 19 is connected to the first IDT electrode 11, and the second extraction electrode 20 is connected to the second IDT electrode 12.
- the first extraction electrode 19 is extracted from the first IDT electrode 11 to the side opposite to the reaction portion 13, and the end 19 e of the first extraction electrode 19 is electrically connected to the wiring 7 provided on the first cover member 1. Yes.
- the second extraction electrode 20 is extracted from the second IDT electrode 12 to the side opposite to the reaction portion 13, and the end 20 e of the second extraction electrode 20 is electrically connected to the wiring 7.
- the first extraction electrode 19 and the second extraction electrode 20 may be made of the same material and configuration as the first IDT electrode 11 and the second IDT electrode 12, and may have a single layer structure made of a thin film layer of gold, for example.
- a multi-layer structure such as a three-layer structure of a titanium layer, a gold layer, and a titanium layer, or a three-layer structure of a chromium layer, a gold layer, and a chromium layer may be employed from the substrate 10a side.
- Detection of detection object using detection element 3 In order to detect an object to be detected in the sample liquid by the detection element 3 using SAW as described above, first, an external measuring instrument is connected to the first IDT electrode 11 via the wiring 7 and the first extraction electrode 19. A predetermined voltage is applied.
- This voltage excites the formation region of the first IDT electrode 11 in the surface of the element substrate 10a, and SAW having a predetermined frequency is generated. Part of the generated SAW propagates toward the reaction unit 13, passes through the reaction unit 13, and then reaches the second IDT electrode 12.
- the aptamer in the reaction unit 13 binds to a specific object to be detected in the sample liquid, and the weight (mass) of the reaction unit 13 changes by the amount of the binding, so that the SAW that passes through the reaction unit 13 changes. Characteristics such as phase change.
- the voltage generated in this way is output to the outside through the second extraction electrode 20, the wiring 7, etc., and by reading it with an external measuring instrument, the properties and components of the sample liquid can be examined.
- the sensor device 100 utilizes a capillary phenomenon.
- the flow path 15 has an elongated tubular shape on the lower surface of the second cover member 2 by joining the second cover member 2 to the intermediate cover member 1A. Become. Therefore, in consideration of the type of sample liquid, the material of the intermediate cover member 1A and the second cover member 2, the width or diameter of the flow channel 15 is set to a predetermined value, and the elongated tubular flow channel 15 is formed. Capillary action can occur.
- the width of the flow path 15 is, for example, 0.5 mm to 3 mm, and the depth is, for example, 0.1 mm to 0.5 mm. As shown in FIG.
- the flow path 15 has a downstream part (extension part) 15b that is a part extending beyond the reaction part 13, and the second cover member 2 has an extension part 15b.
- a connected exhaust hole 18 is formed. When the sample liquid enters the flow path 15, the air present in the flow path 15 is released to the outside from the exhaust hole 18.
- the sample liquid flows through the flow path 15 by bringing the sample liquid into contact with the inflow portion 14. It is sucked into the sensor device 100.
- the sensor device 100 itself includes the specimen liquid suction mechanism, the specimen liquid can be sucked without using an instrument such as a pipette.
- the flow path 15 for the sample liquid has a depth of about 0.3 mm, whereas the detection element 3 has a thickness of about 0.3 mm.
- the depth of 15 and the thickness of the detection element 3 are substantially equal. Therefore, if the detection element 3 is placed on the upper surface of the first cover member 1 as it is on the flow channel 15, the flow channel 15 is blocked. Therefore, in the sensor device 100, as shown in FIG. 1B and FIG. 5, the first cover member 1 on which the detection element 3 is mounted and the intermediate cover member 1A joined on the first cover member 1 are used. An element placement unit 5 is provided.
- the flow path 15 of the sample liquid is prevented from being blocked. That is, the flow path 15 can be secured by setting the depth of the element placement portion 5 to be approximately the same as the thickness of the detection element 3 and mounting the detection element 3 in the element placement portion 5.
- the detection element 3 is fixed to the bottom surface of the element arrangement portion 5 by, for example, a die bond material mainly composed of epoxy resin, polyimide resin, or silicone resin.
- the end 19e of the first extraction electrode 19 and the wiring 7 are electrically connected by a thin metal wire 27 made of, for example, Au.
- the connection between the end 20e of the second extraction electrode 20 and the wiring 7 is the same.
- the connection between the first extraction electrode 19 and the second extraction electrode 20 and the wiring 7 is not limited to the metal thin wire 27 but may be a conductive adhesive such as Ag paste, for example. Since a gap is provided in the connection portion between the first extraction electrode 19 and the second extraction electrode 20 and the wiring 7, when the second cover member 2 is bonded to the first cover member 1, Damage is suppressed.
- the first extraction electrode 19, the second extraction electrode 20, the thin metal wire 27 and the wiring 7 are covered with a protective film 28. Since the first extraction electrode 19, the second extraction electrode 20, the fine metal wire 27 and the wiring 7 are covered with the protective film 28, it is possible to suppress corrosion of these electrodes and the like.
- the sensor device 100 since the detection element 3 is accommodated in the element arrangement portion 5 of the first cover member 1, the flow of the sample liquid from the inflow portion 14 to the reaction portion 13 is performed.
- the channel 15 can be secured, and the sample liquid aspirated from the inflow portion 14 by capillary action or the like can flow to the reaction portion 13. That is, even when the detection element 3 having a predetermined thickness is used, the sample liquid can be efficiently guided to the detection element 3 because the sensor device 100 itself can be provided with a sample liquid suction mechanism.
- a sensor device 100 can be provided.
- FIG. 7 is a schematic view showing a manufacturing process of the detection element 3.
- the element substrate 10a made of quartz is cleaned. Thereafter, if necessary, an Al film 50 is formed on the lower surface of the element substrate 10a by RF sputtering (FIG. 7A).
- an electrode pattern is formed on the upper surface of the element substrate 10a.
- an image reversal type photoresist pattern 51 for forming an electrode pattern is formed by photolithography (FIG. 7B).
- a metal layer 52 having a three-layer structure of Ti / Au / Ti is formed on a portion where the photoresist pattern 51 is formed and a portion where the photoresist pattern 51 is not formed using an electron beam evaporation machine.
- a film is formed (FIG. 7C).
- the photoresist pattern 51 is lifted off using a solvent, and then ashing is performed by oxygen plasma, whereby a Ti / Au / Ti electrode pattern 53 is formed (FIG. 7D).
- the electrode pattern 53 of Ti / Au / Ti constitutes a reflector (not shown) and the lead electrodes 19 and 20 for mounting in addition to the pair of IDT electrodes 11 and 12 and the fixed film 13a.
- the pair of IDT electrodes 11 and 12 are arranged to face each other, and one has a function of a transmitter and the other has a function of a receiver.
- the pair of IDT electrodes 11 and 12, the immobilization film 13a, the reflector, and the lead electrodes 19 and 20 for mounting can be formed in the same process.
- a protective film 28 is formed on the upper surface of the element substrate 10a so as to cover the electrode pattern 53 of Ti / Au / Ti by, for example, TEOS (Tetra Ethyl OrthoilSilicate) -plasma CVD (FIG. 7E). .
- TEOS Tetra Ethyl OrthoilSilicate
- a positive photoresist 54 is formed on the upper surface of the protective film 28, and the protective film 28 is etched by using an RIE apparatus to form a pattern of the protective film 28 (FIG. 7F). .
- a positive photoresist 54 is formed on the upper surface of the protective film 28 covering the IDT electrodes 11 and 12, and the protective film 28 at a portion where the positive photoresist 54 is not formed is formed on the RIE.
- the positive photoresist 54 is lifted off using a solvent to form a pattern of the protective film 28 that covers the IDT electrodes 11 and 12.
- the element substrate 10a in the third region A3 between the first region A1 where the first IDT electrode 11 and the second IDT electrode 12 are located and the second region A2 where the immobilization film 13a is located.
- the recess A3a which is a lower part than the first region A1 and the second region A2, is formed.
- the protective film 28 in the portion where the photoresist 54 is not formed in the Ti / Au / Ti electrode pattern 53 is removed by etching using an RIE apparatus, and the Ti / Au / Ti electrode pattern is further removed.
- the portion of the immobilization film 13a that is not covered by the protective film 28 may have a two-layer structure of Au / Ti.
- the Au / Ti two-layer structure fixing film 13a can be sandwiched between the pair of Ti / Au / Ti three-layer IDT electrodes 11 and 12.
- two sets each including a pair of Ti / Au / Ti IDT electrodes 11 and 12 and an Au / Ti immobilization film 13a are formed on one element substrate 10a, and one set is “detection side”. The other is used as the “reference side”. Similar to the fixed film 13a, the reflector and mounting lead electrodes 19 and 20 can be etched up to the outermost layer Ti.
- the Al film 50 formed on the lower surface of the element substrate 10a is removed using hydrofluoric acid.
- an aptamer composed of a nucleic acid or a peptide is immobilized to form a reaction portion 13 (FIG. 7 (g)). As described above, the detection element 3 is formed.
- the element substrate 10a is diced and divided into a predetermined size (FIG. 7H). Thereafter, the individual detection elements 3 obtained by the division are placed on an epoxy-based adhesive 56 on a glass epoxy mounting board (hereinafter referred to as a mounting board) corresponding to the first cover member 1 on which wiring is formed in advance. Fix the back side with. Then, by using an Au fine wire as the conducting wire 27, the electrodes 19e and 20e of the extraction electrode on the detection element 3 and the wiring 7 connected to the terminal 6 on the mounting substrate are electrically connected (FIG. 7 (i )).
- a glass epoxy mounting board hereinafter referred to as a mounting board
- the intermediate cover member 1A, the second cover member 2 and the like are provided to form the sensor device 100 according to the embodiment of the present invention.
- the manufacturing process of the detection element 3 and the manufacturing process of the sensor device 100 are not limited to the above-described process illustrated in FIG. 7, and the reaction unit 13 is more than the region 10 a 1 where the first IDT electrode 11 and the second IDT electrode 12 are located. Any manufacturing process may be employed as long as the method can manufacture the element substrate 10a having a lower upper surface in the region 10a2 positioned.
- the present invention is not limited to the above embodiment, and may be implemented in various aspects.
- the reaction unit 13 has been described with the immobilization film 13a and the aptamer immobilized on the upper surface of the immobilization film 13a.
- the reaction unit 13 is not limited to the aptamer, and the detection target in the sample liquid Any reactive substance that reacts and changes the SAW characteristics before and after passing through the reaction unit 13 can be used by being fixed on the upper surface of the immobilization film 13a.
- the reaction unit 13 may be configured only by the immobilized film 13a without using an aptamer.
- the region between the first IDT electrode 11 and the second IDT electrode 12 on the surface of the element substrate 10a that is a piezoelectric substrate may be used as the reaction unit 13 without using the immobilization film 13a.
- the physical properties such as the viscosity of the sample liquid can be detected by directly attaching the sample liquid to the surface of the element substrate 10a. More specifically, the phase change of the SAW due to the change in the viscosity of the sample liquid on the reaction unit 13 is measured.
- the immobilization film 13a a film having no conductivity can be used instead of the metal film, and the aptamer may be immobilized on the upper surface of the film.
- the detection element 3 a plurality of types of devices may be mixed on one substrate.
- an enzyme electrode method enzyme electrode may be provided next to the SAW element.
- measurement by an enzyme method is possible, and the number of items that can be examined at a time can be increased.
- the element arrangement part 5 may be provided for each detection element 3, or the element arrangement part 5 having a length or width that can accommodate all the detection elements 3 may be formed.
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Abstract
Description
本発明の実施形態に係るセンサ装置100について、図1~図6を用いて説明する。
第1カバー部材1は、図1(a)、図1(b)および図2(a)に示すように平板状である。厚みは、例えば0.1mm~1.5mmである。第1カバー部材1の平面形状は概ね長方形状である。第1カバー部材1の長さ方向の長さは、例えば1cm~8cmであり、幅方向の長さは、例えば1cm~3cmである。
本実施形態において、図1(b)に示すように、中間カバー部材1Aが、第1カバー部材1の上面に、検出素子3と並んで位置している。また、図1(a)および図3(c)に示すように、中間カバー部材1Aと検出素子3とは間隙を介して位置している。なお、中間カバー部材1Aと検出素子3とはそれぞれの側部同士が接するように配置してもよい。
第2カバー部材2は、図1(b)および図3(e)に示すように、検出素子3を覆うとともに、第1カバー部材1および中間カバー部材1Aに接合されている。ここで、第2カバー部材2は、図1(b)および(c)に示すように、第3基板2aと第4基板2bとを有する。
本実施形態に係る検出素子3について、図1~図6、特に図4~図6を用いて説明する。
素子基板10aは、例えば、水晶、タンタル酸リチウム(LiTaO3)単結晶、またはニオブ酸リチウム(LiNbO3)単結晶などの圧電性を有する単結晶の基板からなる。素子基板10aの平面形状および各種寸法は適宜設定すればよい。素子基板10aの厚みは、例えば0.3mm~1mmである。
図4および図6に示すように、第1IDT電極11は、1対の櫛歯電極を有する。各櫛歯電極は、互いに対向する2本のバスバーおよび各バスバーから他のバスバー側へ延びる複数の電極指を有している。そして、1対の櫛歯電極は、複数の電極指が互いに噛み合うように配置されている。第2IDT電極12も、第1IDT電極11と同様に構成されている。第1IDT電極11および第2IDT電極12は、トランスバーサル型のIDT電極を構成している。
図4および図6に示すように、反応部13は、第1IDT電極11と第2IDT電極12との間に設けられている。
保護膜28は、図6に示すように、素子基板10aの上面に位置しており、第1IDT電極11および第2IDT電極12を覆っている。これによって、検体液が第1IDT電極11および第2IDT電極12に接触することを抑制することができ、IDT電極の酸化などによる腐食を低減することが可能となる。保護膜28の材料としては、例えば酸化珪素、酸化アルミニウム、酸化亜鉛、酸化チタン、窒化珪素またはシリコンが挙げられる。なお、これらの材料は、保護膜28の中で質量比率が最も多い主成分として用いられればよく、極僅かに不純物として混入などしている場合は材料として判断されないものとする。
図4に示すように、第1引出し電極19は第1IDT電極11と接続されており、第2引出し電極20は第2IDT電極12と接続されている。第1引出し電極19は、第1IDT電極11から反応部13とは反対側に引き出され、第1引出し電極19の端部19eは第1カバー部材1に設けた配線7と電気的に接続されている。第2引出し電極20は、第2IDT電極12から反応部13とは反対側に引き出され、第2引出し電極20の端部20eは配線7と電気的に接続されている。
以上のようなSAWを利用した検出素子3において検体液中の被検出物の検出を行なうには、まず、第1IDT電極11に、配線7および第1引出し電極19などを介して外部の測定器から所定の電圧を印加する。
本実施形態において、検体液の流路15は深さが0.3mm程度であるのに対し、検出素子3は厚みが0.3mm程度であり、図1(b)に示すように、流路15の深さと検出素子3の厚さとがほぼ等しい。そのため、流路15上に検出素子3を第1カバー部材1の上面にそのまま置くと流路15が塞がれてしまう。そこで、センサ装置100においては、図1(b)および図5に示すように、検出素子3が実装される第1カバー部材1と第1カバー部材1上に接合される中間カバー部材1Aとによって素子配置部5を設けている。この素子配置部5の中に検出素子3を収容することによって、検体液の流路15が塞がれないようにしている。すなわち、素子配置部5の深さを検出素子3の厚みと同程度にし、その素子配置部5の中に検出素子3を実装することによって、流路15を確保することができる。
本発明の実施形態に係るセンサ装置100が備える検出素子3の製造工程について説明する。図7は、検出素子3の製造工程を示す概略図である。
以上のようにして、検出素子3が形成される。
本発明は、以上の実施形態に限定されず、種々の態様で実施されてよい。
1A・・・中間カバー部材
1Aa・・・第1上流部
2・・・第2カバー部材
2a・・・第3基板
2b・・・第4基板
3・・・検出素子
4・・・凹部形成部位
5・・・素子配置部
6・・・端子
7・・・配線
9・・・充填部材
10a・・・素子基板
A1・・・第1領域
A2・・・第2領域
A3・・・第3領域
A3a・・・凹部
10b・・・検出部
11・・・第1IDT電極
12・・・第2IDT電極
13・・・反応部
13a・・・固定化膜
14・・・流入部
15・・・流路
15a・・・上流部
15b・・・下流部(延長部)
18・・・排気孔
19・・・第1引出し電極
19e・・・端部
20・・・第2引出し電極
20e・・・端部
27・・・導線(金属細線)
28・・・保護膜
100・・・センサ装置
Claims (15)
- 素子基板と、
前記素子基板の上面に位置している、固定化膜を有し検体の検出を行なう反応部、前記反応部に向かって伝搬する弾性波を発生させる第1IDT電極、および前記反応部を通過した前記弾性波を受信する第2IDT電極、を有する検出部と、
前記第1IDT電極および前記第2IDT電極を覆っている保護膜と、を備え、
前記素子基板の上面は、前記第1IDT電極および前記第2IDT電極が位置している第1領域、前記反応部が位置している第2領域、および前記第1領域と前記第2領域との間の第3領域を有し、前記第3領域の少なくとも一部は前記第1領域および前記第2領域よりも低い、センサ装置。 - 前記素子基板は、前記第3領域の前記少なくとも一部に凹部を有しており、前記凹部は底部に向かうにつれて側断面視で狭くなっている、請求項1に記載のセンサ装置。
- 前記保護膜は、前記第3領域のうち前記第1IDT電極および前記第2IDT電極の少なくとも一方と前記凹部との間に位置している、請求項2に記載のセンサ装置。
- 前記保護膜は、前記第3領域に位置している、請求項1~3のいずれかに記載のセンサ装置。
- 前記保護膜は、前記第1IDT電極および前記第2IDT電極の少なくとも一方と前記固定化膜との間に位置している、請求項1~4のいずれかに記載のセンサ装置。
- 前記保護膜は、前記固定化膜と離れて位置している、請求項1~5のいずれかに記載のセンサ装置。
- 前記固定化膜の上面は、前記第1IDT電極の上面および前記第2IDT電極の上面の少なくとも一方よりも低い、請求項1~6のいずれかに記載のセンサ装置。
- 前記固定化膜の材料は、前記第1IDT電極および前記第2IDT電極の材料と同一である、請求項1~7のいずれかに記載のセンサ装置。
- 前記第1IDT電極の厚みおよび前記第2IDT電極の厚みの少なくとも一方よりも前記固定化膜の厚みの方が小さい、請求項1~8のいずれかに記載のセンサ装置。
- 前記第1IDT電極の上面の表面粗さおよび前記第2IDT電極の上面の表面粗さの少なくとも一方よりも前記固定化膜の上面の表面粗さの方が大きい、請求項1~9のいずれかに記載のセンサ装置。
- 側断面視で、前記保護膜のうち前記固定化膜の側の端部は、上端よりも下端の方が、前記固定化膜との距離が短い、請求項1~10のいずれかに記載のセンサ装置。
- 側断面視で、前記保護膜のうち前記固定化膜の側の端部は、上端から下端へと向かうにつれて、前記固定化膜の側に傾斜している、請求項1~11のいずれかに記載のセンサ装置。
- 前記固定化膜は、側断面視で、前記第1IDT電極および前記第2IDT電極の少なくとも一方のIDT電極側の端部のうち上端よりも下端の方が、前記一方のIDT電極との距離が短い、請求項1~12のいずれかに記載のセンサ装置。
- 前記固定化膜は、側断面視で、前記第1IDT電極および前記第2IDT電極の少なくとも一方のIDT電極側の端部のうち上端から下端へと向かうにつれて、前記一方のIDT電極側に傾斜している、請求項1~13のいずれかに記載のセンサ装置。
- 前記固定化膜の傾斜している前記端部の傾斜角度が、前記保護膜の傾斜している端部の傾斜角度よりも小さい、請求項12を引用する請求項14記載のセンサ装置。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010233210A (ja) * | 2009-03-03 | 2010-10-14 | Nippon Dempa Kogyo Co Ltd | 弾性波デバイス及び電子部品 |
WO2013108608A1 (ja) * | 2012-01-20 | 2013-07-25 | パナソニック株式会社 | 弾性波センサ |
JP2013148572A (ja) * | 2011-12-22 | 2013-08-01 | Japan Radio Co Ltd | 被測定物特性測定装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5130257A (en) | 1988-09-29 | 1992-07-14 | Hewlett-Packard Company | Chemical sensor utilizing a surface transverse wave device |
US5283037A (en) | 1988-09-29 | 1994-02-01 | Hewlett-Packard Company | Chemical sensor utilizing a surface transverse wave device |
US6235488B1 (en) | 1988-09-29 | 2001-05-22 | Agilent Technologies, Inc. | Surface preparation for chemical-specific binding |
US5306644A (en) | 1988-09-29 | 1994-04-26 | Hewlett-Packard Company | Mass sensor method for measuring analytes in a sample |
US6320295B1 (en) * | 1998-11-18 | 2001-11-20 | Mcgill Robert Andrew | Diamond or diamond like carbon coated chemical sensors and a method of making same |
ATE443863T1 (de) * | 2000-03-20 | 2009-10-15 | Draper Lab Charles S | Biegewellensensor |
JP4618492B2 (ja) | 2004-12-24 | 2011-01-26 | セイコーエプソン株式会社 | 弾性表面波センサ |
JP2007010378A (ja) * | 2005-06-28 | 2007-01-18 | Seiko Epson Corp | 弾性表面波素子及びその製造方法、弾性表面波センサ、並びに弾性表面波センサシステム |
US8508100B2 (en) * | 2008-11-04 | 2013-08-13 | Samsung Electronics Co., Ltd. | Surface acoustic wave element, surface acoustic wave device and methods for manufacturing the same |
JP2010239477A (ja) | 2009-03-31 | 2010-10-21 | Japan Radio Co Ltd | 表面弾性波センサ |
EP2477332A4 (en) * | 2009-09-11 | 2013-12-25 | Panasonic Corp | ACOUSTIC WAVE ELEMENT AND ACOUSTIC WAVE ELEMENT SENSOR |
JP2011180036A (ja) * | 2010-03-02 | 2011-09-15 | Japan Radio Co Ltd | 表面弾性波センサ |
JP2013076625A (ja) * | 2011-09-30 | 2013-04-25 | Panasonic Corp | 弾性波センサ |
US9863916B2 (en) * | 2013-01-30 | 2018-01-09 | Kyocera Corporation | Sensor apparatus |
US10073061B2 (en) * | 2014-11-29 | 2018-09-11 | Kyocera Corporation | Sensor apparatus |
-
2015
- 2015-10-30 US US15/305,788 patent/US10073061B2/en active Active
- 2015-10-30 EP EP15863563.1A patent/EP3225984B1/en active Active
- 2015-10-30 WO PCT/JP2015/080862 patent/WO2016084554A1/ja active Application Filing
- 2015-10-30 JP JP2016546064A patent/JP6018352B1/ja active Active
-
2016
- 2016-09-29 JP JP2016192261A patent/JP6298134B2/ja active Active
-
2018
- 2018-02-22 JP JP2018029545A patent/JP2018105885A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010233210A (ja) * | 2009-03-03 | 2010-10-14 | Nippon Dempa Kogyo Co Ltd | 弾性波デバイス及び電子部品 |
JP2013148572A (ja) * | 2011-12-22 | 2013-08-01 | Japan Radio Co Ltd | 被測定物特性測定装置 |
WO2013108608A1 (ja) * | 2012-01-20 | 2013-07-25 | パナソニック株式会社 | 弾性波センサ |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2020218369A1 (ja) * | 2019-04-26 | 2020-10-29 | ||
WO2020218369A1 (ja) * | 2019-04-26 | 2020-10-29 | 京セラ株式会社 | センサ装置の製造方法、及び、センサ装置 |
JP7213336B2 (ja) | 2019-04-26 | 2023-01-26 | 京セラ株式会社 | センサ装置の製造方法、及び、センサ装置 |
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EP3225984B1 (en) | 2020-11-25 |
EP3225984A1 (en) | 2017-10-04 |
JP6298134B2 (ja) | 2018-03-20 |
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JP2018105885A (ja) | 2018-07-05 |
JP2017021047A (ja) | 2017-01-26 |
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US20170261470A1 (en) | 2017-09-14 |
US10073061B2 (en) | 2018-09-11 |
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