WO2013190745A1 - マイクロ流体デバイス - Google Patents
マイクロ流体デバイス Download PDFInfo
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- WO2013190745A1 WO2013190745A1 PCT/JP2013/001323 JP2013001323W WO2013190745A1 WO 2013190745 A1 WO2013190745 A1 WO 2013190745A1 JP 2013001323 W JP2013001323 W JP 2013001323W WO 2013190745 A1 WO2013190745 A1 WO 2013190745A1
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- temperature
- region
- microfluidic device
- temperature control
- reaction
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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
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
- B01L7/525—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples with physical movement of samples between temperature zones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
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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
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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
- B01L3/502715—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 characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/248—Reactors comprising multiple separated flow channels
- B01J19/2485—Monolithic reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00081—Tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00783—Laminate assemblies, i.e. the reactor comprising a stack of plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00819—Materials of construction
- B01J2219/00822—Metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
- B01J2219/00876—Insulation elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
- B01J2219/00885—Thin film heaters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0228—Coating in several steps
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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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
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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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/087—Multiple sequential chambers
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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
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0883—Serpentine channels
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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
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
- B01L2300/1827—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using resistive heater
Definitions
- the present invention relates to a microfluidic device such as a microreaction device (microreactor), an integrated DNA device, or a microelectrophoresis device.
- a microfluidic device such as a microreaction device (microreactor), an integrated DNA device, or a microelectrophoresis device.
- microfluidic devices such as microreaction devices, integrated DNA devices, and microelectrophoresis devices manufactured by applying microfabrication technology have attracted attention. Since the microfluidic device has a very narrow reaction channel and causes a chemical reaction or the like in the reaction channel, analysis of a sample or the like can be performed extremely efficiently and inexpensively.
- Patent Document 1 discloses a method using a microfluidic device as a method of performing a temperature change at high speed in a reaction device that gives a desired temperature change to the reaction fluid.
- a device substrate is divided
- a method is disclosed for varying the temperature in each region. With such a configuration, a desired temperature change can be given only by flowing a fluid through the meandering flow path, and therefore the fluid temperature can be changed at high speed.
- the microfluidic device 101 is heated by the large external heater block 100 attached to the outside of the microfluidic device 101 as shown in FIG. 1)
- the entire system increases in size by the size of the external heater block 10.
- the heater block 100 and the microfluidic device 101 There is a problem that the apparatus becomes complicated because the contact means is required.
- the heater block 100 has uneven heating, there is a problem that it is difficult to uniformly heat the fluid in the reaction channel.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a miniaturized microfluidic device with a heater that can form a uniform temperature region and has a simple structure. It is in.
- a microfluidic device is a microfluidic device comprising a substrate, a reaction channel formed on the substrate, and a temperature adjusting heater for heating the reaction channel.
- a substrate On the substrate, reaction channel forming regions in which the reaction channels are formed and temperature adjusting heater forming regions in which the temperature adjusting heater is formed are alternately arranged, In the reaction channel forming region, the reaction channel is formed by being folded at least once, The temperature adjusting heater is formed in the temperature adjusting heater forming region by being folded at least once.
- each of the reaction flow path formation region and the temperature control heater formation region has a first temperature region and a second temperature region, which are alternately arranged in one direction. And The first temperature region and the second temperature region are juxtaposed in a direction different from the one direction.
- a first reaction channel forming region included in the first temperature region and a second reaction channel forming region included in the second temperature region include: Arranged differently from each other, The adjacent reaction channels formed in the first reaction channel forming region and the second reaction channel forming region are formed in communication with each other.
- a first temperature control heater formation region included in the first temperature region and a second temperature control heater formation region included in the second temperature region include: Staggered, It is preferable that the adjacent temperature control heaters formed in the first temperature control heater formation region and the second temperature control heater formation region are continuously formed.
- thermocontrol heaters formed by meandering in a meandering manner are provided in one temperature control heater formation region.
- reaction channels formed by being meandered and separated in one reaction channel formation region.
- the number of times the temperature control heater is folded in one temperature control heater formation region is 1 to 10.
- the number of turns of the reaction channel in one reaction channel formation region is 1 to 10.
- the microfluidic device according to the present invention may further include a protective substrate on the substrate, the reaction channel formed by opening the substrate outwardly by the protective substrate, and the temperature control disposed on the substrate.
- the heater is covered.
- the microfluidic device according to the present invention may have a separation groove formed in the back surface of the substrate at the boundary between the two or more temperature regions.
- the microfluidic device according to the present invention may further include a through hole formed so as to penetrate from the back surface to the front surface of the substrate at the boundary.
- a step may be formed between the surface on which the temperature adjusting heater is formed and the surface of the substrate, and the temperature adjusting heater is provided on the substrate. It is preferable that it does not protrude from the surface.
- the temperature control heater is preferably a metal thin film heater.
- the two or more temperature control heaters can be temperature controlled separately.
- the above-described microfluidic device can be used as a polymerase chain reaction device.
- a protruding portion formed by folding the reaction channel once in the reaction channel forming region and a protruding portion formed by folding the temperature adjusting heater once in the temperature adjusting heater forming region are nested. When arranged, the reaction channel can be heated uniformly by the temperature control heater.
- the temperature control heater formation region is formed on the substrate, no contact means for improving heat transfer between the heater block and the microfluidic device is required, and no contact means is required. can do. Furthermore, since the temperature control heater is formed on the substrate and a separate heater block is not required, and the temperature control heater can be formed only by printing a thin metal film on the substrate, for example, a microfluidic device. Can be miniaturized.
- microfluidic device of the present invention it is possible to provide a miniaturized microfluidic device with a heater that can form a uniform temperature region and has a simple structure.
- FIG. 1 is a perspective view of a microfluidic device according to Embodiment 1 of the present invention.
- FIG. 2 is a top view of the substrate constituting the microfluidic device according to Embodiment 1 of the present invention.
- FIG. 3 is a top view of a substrate constituting the microfluidic device according to Embodiment 2 of the present invention.
- 4 (a) to 4 (d) are cross-sectional views of the microfluidic device according to Embodiment 2 of the present invention and having a separation groove at the boundary of two or more temperature regions.
- FIG. 5 is a top view of a microfluidic device according to another aspect of the second embodiment of the present invention.
- FIG. 1 is a perspective view of a microfluidic device according to Embodiment 1 of the present invention.
- FIG. 2 is a top view of the substrate constituting the microfluidic device according to Embodiment 1 of the present invention.
- FIG. 3 is a top view of a substrate
- FIG. 6 is a top view of a microfluidic device according to still another aspect of the second embodiment of the present invention.
- FIG. 7 is a top view of the microfluidic device according to Embodiment 3 of the present invention.
- FIG. 8A is a top view of a conventional microfluidic device, and
- FIG. 8B is a cross-sectional view thereof.
- FIG. 1 is a perspective view of a microfluidic device 1 according to Embodiment 1 of the present invention. As shown in FIG. 1, the microfluidic device 1 according to Embodiment 1 is formed on a substrate 2, a reaction channel 3 formed on the substrate 2, and on the substrate 2 in the vicinity of the reaction channel 3. And a temperature control heater 4 provided for heating the reaction flow path 3.
- FIG. 2 is a top view of the substrate 2 constituting the microfluidic device 1 according to Embodiment 1 of the present invention.
- the reaction flow path forming region 5 in which the reaction flow channel 3 is formed on the substrate 2 and the temperature control heater forming region 6 in which the temperature control heater 4 is formed are in one direction (this In the first embodiment, they are alternately arranged in the longitudinal direction of the substrate. Since the temperature control heater 4 is formed along the reaction flow path 3 and close thereto, the temperature control heater 4 can uniformly heat the fluid and the like in the reaction flow path 3.
- the top view shape of the reaction flow path 3 formed in the reaction flow path forming region 5 is not particularly limited to the substantially U-shaped shape shown in FIG. 2 and the like, and may be any shape.
- any one of the plurality of reaction channels 3 may be different in shape or the same as any other reaction channel 3.
- these shapes are preferably the same. Thereby, the fluid etc. in the reaction flow path 3 can be heated uniformly.
- reaction flow path 3 is uniformly formed in the same reaction flow path forming region 5.
- the reaction channel 3 is uniformly formed in the same reaction channel forming region 5” means that the reaction channel forming region 5 is reacted in one reaction channel forming region 5. It means that the flow paths 3 are formed with equal density.
- the reaction flow path 3 can be heated uniformly, so that the thermal uniformity can be obtained.
- top view shape of the reaction flow path 3 and the temperature control heater 4 is a protrusion shape with the folded portion as a tip (protrusion portion) will be described as an example.
- the reaction flow path 3 is formed in the reaction flow path forming region 5 by being folded at least once and formed into a projecting shape. Thereby, the protruding portion is formed.
- “the reaction channel 3 is formed by folding” means that, as shown in FIG. 2, after the reaction channel 3 extends linearly in one direction, the direction opposite to the one direction at a certain position. It means that it is turned and turned back (for example, a direction of about 180 ° with respect to the one direction) and further linearly extends in the opposite direction. As shown in FIG.
- the folded portion is folded discontinuously (so that the inclination of the tangent at the tip changes discontinuously) (that is, for example, a substantially U shape (a square shape with one opening)). May be curved gently (so that the inclination of the tangent at the tip continuously changes) (that is, substantially U-shaped).
- the number of turns of the reaction channel 3 is not limited to one, but may be two or more (for example, about 2 to 50 times).
- the temperature control heater 4 is formed to be bent at least once.
- the temperature-regulating heater 4 is formed so as to be folded, as described above, as shown in FIG. 2, after the temperature-regulating heater 4 extends linearly in one direction, it is opposite to the one direction at a certain position. It means turning around in a direction (for example, a direction of about 180 ° with respect to the one direction) and being linearly extended in the opposite direction.
- the folded portion may be discontinuously folded (so that the inclination of the tangent line at the tip changes discontinuously) (that is, for example, a substantially U shape (a square shape with one opening)). As shown in FIG.
- the number of turns of the temperature control heater 4 is not limited to one, and may be two or more (for example, about 2 to 50 times).
- the protruding portions are connected to each other on the opposite side with respect to the folded portion, and as shown in FIG. Is formed by meandering.
- the “protruding part” is a predetermined length (formation region (reaction channel formation region 5, temperature control heater formation region 6) in the longitudinal direction (for example, Q direction in FIG. 3). ) Means a portion formed by extending in one direction (for example, the Q direction in FIG. 3) and then folding back and extending the same length in the opposite direction.
- the temperature control heater 4 is arranged in a meandering manner such that the protruding portions are equally spaced, and similarly, the reaction flow path 3 is arranged in a meandering manner so that the protruding portions are equally spaced, Between the protrusions of the temperature control heater 4, the protrusions of the reaction flow path 3 are arranged.
- each protrusion of the reaction flow path 3 enters between the protrusions of the two continuous temperature control heaters 4, and each protrusion of the temperature control heater 4 has two continuous reaction flows. It is arranged in a nested manner so as to enter between the protruding portions of the path 3. Thereby, the temperature control heater 4 can be disposed close to the reaction channel 3, and the reaction channel 3 can be heated efficiently and uniformly by the temperature control heater 4.
- “nested” means that each protrusion of the reaction flow path 3 enters between the protrusions of two continuous temperature control heaters 4, and each protrusion of the temperature control heater 4 is It means entering between the protruding portions of two continuous reaction flow paths 3.
- the microfluidic device with a heater having a simple structure that does not require a close contact means for improving the heat transfer between the heater block and the device. 1 can provide a miniaturized microfluidic device 1 that can form a uniform temperature region.
- FIG. 3 shows a microfluidic device 1 according to Embodiment 2 of the present invention, in which the temperature regions (first temperature region 10 and second temperature region 11) are arranged in two rows. 1 is a top view of FIG.
- a first temperature region 10 and a second temperature region 11 are formed on the microfluidic device 1, and a reaction flow is generated in each of the first temperature region 10 and the second temperature region 11.
- the path formation area 5 and the temperature control heater formation area 6 are formed alternately in one direction P.
- the first temperature region 10 and the second temperature region 11 are juxtaposed in a direction different from the one direction P, for example, a direction Q substantially perpendicular to the one direction.
- the first reaction channel forming region 5 a included in the first temperature region 10 and the second temperature region 11 are included.
- the paths 3 are formed to communicate with each other.
- the protruding portions of the reaction channel 3 can be alternately formed on the left and right with D-D ′ as the center. That is, odd-numbered protrusions can be arranged on the left side, and even-numbered protrusions can be arranged on the right side.
- the temperature control heater 4 can be meandered across the first temperature region 10 and the second temperature region 11. Since the first temperature region 10 and the second temperature region 11 can be set to different temperatures, one reaction channel 3 can be heated at different temperatures.
- the first temperature region 10 is formed by alternately arranging the first reaction flow path forming region 5a and the first temperature adjusting heater forming region 6a, and the second temperature region 11 is formed.
- the second reaction flow path forming region 5b and the second temperature control heater forming region 6b are alternately formed to form a plurality of first reaction flow channels included in the first temperature region 10.
- the regions 5a and the plurality of second reaction flow path forming regions 5b included in the second temperature region 11 are alternately arranged in a state of being shifted one by one. And among the several 1st reaction flow path formation area
- the first reaction channel forming region 5a (A1) included in the first temperature region 10 is replaced by the second reaction channel included in the second temperature region 11.
- the second reaction flow path formation region 5b (B1) which is disposed in the vicinity of the formation region 5b (B1) and included in the second temperature region 11, is the first reaction flow included in the first temperature region 10. It is arranged close to the path forming area 5a (A2).
- the first reaction channel formation region 5a (A2) included in the first temperature region 10 is close to the second reaction channel formation region 5b (B2) included in the second temperature region 11.
- the second reaction channel forming region 5b (B2) that is disposed and included in the second temperature region 11 is close to the first reaction channel forming region 5a (A3) included in the first temperature region 10.
- the first reaction channel forming region 5a (A3) included in the first temperature region 10 is close to the second reaction channel forming region 5b (B3) included in the second temperature region 11.
- the second reaction channel forming region 5b (B3) that is disposed and included in the second temperature region 11 is close to the first reaction channel forming region 5a (A4) included in the first temperature region 10.
- the first reaction channel forming region 5a (A4) included in the first temperature region 10 is close to the second reaction channel forming region 5b (B4) included in the second temperature region 11.
- the second reaction channel forming region 5b (B4) that is disposed and included in the second temperature region 11 is close to the first reaction channel forming region 5a (A5) included in the first temperature region 10. Are arranged. Furthermore, the first reaction channel forming region 5a (A5) included in the first temperature region 10 is close to the second reaction channel forming region 5b (B5) included in the second temperature region 11. The second reaction channel forming region 5b (B5) included in the second temperature region 11 is adjacent to the first reaction channel forming region 5a (A6) included in the first temperature region 10. Are arranged. Further, the first reaction channel forming region 5a (A6) included in the first temperature region 10 is close to the second reaction channel forming region 5b (B6) included in the second temperature region 11. Is arranged.
- the temperature control heaters 4 formed in the first temperature control heater formation region 6a adjacent to each other in the one direction P of the first reaction flow path formation region 5a are continuous with each other.
- one continuous temperature adjusting heater 4 is formed so as to be nested with one continuous reaction flow path 3. More specifically, as shown in FIG. 3, in the first temperature region 10, there is a temperature control heater forming region between the reaction channel forming region 5 a (A 1) and the reaction channel forming region 5 a (A 2). 6a (C1) is formed, and a temperature adjusting heater forming region 6a (C2) is formed between the reaction channel forming region 5a (A2) and the reaction channel forming region 5a (A3).
- a temperature control heater forming region 6a (C3) is formed between the reaction channel forming region 5a (A3) and the reaction channel forming region 5a (A4), and the reaction channel forming region 5a (A4) and A temperature control heater formation region 6a (C4) is formed between the reaction channel formation region 5a (A5).
- a temperature control heater forming region 6a (C5) is formed between the reaction channel forming region 5a (A5) and the reaction channel forming region 5a (A6), and the reaction channel forming region 5a (A6).
- a temperature control heater formation region 6a (C6) is formed next to (adjacent in one direction P (that is, in the positive direction of the P-axis)
- the temperature adjusting heaters 4 formed in the first temperature adjusting heater forming region 6a are connected as shown in FIG. 3, thereby forming one continuous temperature adjusting heater 4. Yes.
- the left protruding portion of the one continuous temperature adjusting heater 4 is formed in a nested manner with the protruding portion of the one continuous reaction channel 3.
- the temperature control heaters 4 formed in the second temperature control heater formation region 6 b adjacent to each other in the one direction P of the second reaction flow path formation region 5 b are continuous.
- one continuous temperature control heater 4 is formed. More specifically, as shown in FIG. 3, in the second temperature region 11, next to the reaction flow path formation region 5b (B1) (next to the direction opposite to the one direction P (the negative direction of the P axis)).
- the temperature control heater forming region 6b (D1) is formed, and the temperature control heater forming region 6b (D2) is formed between the reaction channel forming region 5b (B1) and the reaction channel forming region 5b (B2). Is formed.
- a temperature control heater forming region 6b (D3) is formed between the reaction channel forming region 5b (B2) and the reaction channel forming region 5b (B3), and the reaction channel forming region 5b (B3) and A temperature control heater formation region 6b (D4) is formed between the reaction channel formation region 5b (B4).
- a temperature control heater forming region 6b (D5) is formed between the reaction channel forming region 5b (B4) and the reaction channel forming region 5b (B5), and the reaction channel forming region 5b (B5).
- a reaction flow path forming region 5b (B6), a temperature control heater forming region 6b (D6) is formed.
- the temperature adjusting heater 4 formed in the second temperature adjusting heater forming region 6b (D1 to D6) is connected as shown in FIG. 3, so that one continuous temperature adjusting heater 4 is formed. Yes.
- the right protruding portion of the one continuous temperature control heater 4 is formed so as to be nested with the protruding portion of the one continuous reaction channel 3.
- the first temperature region 10 is meandered so as to be equally spaced between the protruding portions of the temperature adjusting heater 4 meandered so as to be equally spaced. Further, since the protruding portion of the reaction channel 3 is arranged, the heat uniformity can be improved. That is, each protrusion of the reaction flow path 3 enters between the protrusions of the two continuous temperature control heaters 4, and each protrusion of the temperature control heater 4 has two continuous reaction flows. Since the temperature adjusting heater 4 can be disposed close to the reaction flow path 3 by arranging it in a nested manner so as to enter between the protruding portions of the path 3, it can be heated efficiently and uniformly. The same applies to the second temperature region 11.
- each reaction channel forming region 5 (first reaction channel forming region 5 a, second reaction channel forming region 5 b) has a protruding portion of the reaction channel 3. Two may be formed.
- seven reaction channel 3 protrusions may be formed in one reaction channel forming region 5. By setting it as such a structure, it can heat to higher temperature and can implement
- the number of times the temperature control heater 4 is folded in one temperature control heater formation region 6 is 1 to 50. More preferably, it is 1-10. By setting the number of turns of the temperature control heater 4 in such a range, rapid heating and uniform heating can be realized.
- the microfluidic device 1 according to Embodiment 2 of the present invention preferably further includes a protective substrate 20 on the substrate 2, and the protective substrate 20 opens outward to the substrate 2.
- the temperature control heater 4 disposed on the reaction flow path 3 and the substrate 2 formed in this manner is covered. By setting it as such a structure, while being able to protect the temperature control heater 4, it can prevent that the fluid in the reaction flow path 3 leaks out of the reaction flow path 3.
- the protective substrate 20 may be made of any material as long as the temperature control heater 4 and the reaction flow path 3 formed on the substrate 2 can be well protected.
- 4 (a) to 4 (d) are cross-sectional views of the microfluidic device 1 according to Embodiment 2 of the present invention and having a separation groove at the boundary of two or more temperature regions.
- 4A is a cross-sectional view taken along the line AA ′ of the microfluidic device 1 illustrated in FIG. 3
- FIG. 4B is a cross-sectional view taken along the line BB of the microfluidic device 1 illustrated in FIG. It is a sectional view in a section.
- 4C is a cross-sectional view taken along the line CC ′ of the microfluidic device 1 illustrated in FIG. 3
- FIG. 4D is a cross-sectional view of D of the microfluidic device 1 illustrated in FIG. It is sectional drawing in a -D 'cross section.
- an isolation groove 30 may be formed in the back surface of the substrate 2 at the boundary between two or more temperature regions 10 and 11.
- the two temperature regions 10 and 11 may be connected at a portion other than the separation groove 30 as shown in FIG.
- the separation groove 30 improves the thermal insulation between the temperature regions. Therefore, as described above, by forming the separation groove 30 at the boundary between two or more temperature regions, the thermal insulation between the temperature regions 10 and 11 can be improved.
- the cross-sectional shape may be any shape.
- the cross-sectional shape of the separation groove 30 is preferably rectangular in that the separation groove 30 can be easily formed.
- the separation groove 30 improves the thermal insulation between the temperature regions 10 and 11
- the separation groove 30 does not necessarily have to be opened on the back surface of the substrate 2, and is opened on both the front surface and the back surface of the substrate 2. (That is, a closed space may be formed between the temperature regions 10 and 11 of the substrate 2). Even if both the front and back surfaces of the substrate 2 are closed, the thermal insulation between the temperature regions 10 and 11 can be improved satisfactorily.
- the substrate 2 penetrates from the back surface to the surface at the boundary between the two temperature regions 10 and 11. You may further provide the through-hole 31 formed in this. With such a configuration, the thermal insulation between the temperature regions 10 and 11 can be further improved.
- the surface on which the temperature control heater 4 is formed, and the substrate 2 It is preferable that a step is formed between the outermost surface and the temperature adjusting heater 4 does not protrude from the outermost surface of the substrate 2. With such a configuration, the substrate 2 and the protective substrate 20 can be easily joined, and the yield can be improved.
- the temperature adjustment heater 4 is preferably a metal thin film heater.
- the temperature adjusting heater 4 is a metal thin film heater, it can be easily integrated on the device.
- examples of the material used for the metal thin film heater include metals such as gold, platinum, copper, and aluminum. These materials can be suitably used because they have low resistance and are easy to produce.
- a known method such as sputtering or vapor deposition can be used.
- thermocontrol can be performed with high accuracy.
- the microfluidic device 1 As described above, according to the microfluidic device 1 according to the second embodiment, the microfluidic device with a heater having a simple structure that does not require a close contact means for improving the heat transfer between the heater block and the device. 1 can provide a miniaturized microfluidic device 1 that can form a uniform temperature region. Furthermore, since a temperature region having two or more different temperatures can be formed, the fluid in the reaction channel 3 can be adjusted to various temperatures, and a microfluidic device with good temperature control can be provided. it can.
- FIG. 8 shows a microfluidic device 1 according to Embodiment 3 of the present invention, in which three rows of temperature regions (first temperature region 10, second temperature region 11, and third temperature region 12) are juxtaposed.
- 2 is a top view of the microfluidic device 1.
- a first temperature region 10, a second temperature region 11, and a third temperature region 12 are formed on the microfluidic device 1, and the first temperature region 10 and the second temperature region are formed.
- reaction flow path forming regions 5 and temperature adjusting heater forming regions 6 are alternately arranged in one direction P.
- the first temperature region 10, the second temperature region 11, and the third temperature region 12 are juxtaposed in a direction different from the one direction P, for example, a direction Q substantially perpendicular to the one direction.
- the first reaction channel forming region 5a included in the first temperature region 10 and the second reaction channel included in the second temperature region 11 The reaction flow paths 3 formed in the first reaction flow path formation area 5a and the second reaction flow path formation area 5b, which are alternately arranged and close to each other, are formed in communication with each other.
- One continuous reaction channel 3 is formed in the first temperature region 10 and the second temperature region 11.
- the second temperature control heater formation region 6b included in the second temperature region 11 and the third temperature control heater formation region 6c included in the third temperature region 12 are alternately arranged and are close to each other.
- the temperature adjusting heaters 4 formed in the second temperature adjusting heater forming region 6b and the third temperature adjusting heater forming region 6c are continuously formed, and the second temperature region 11 and the third temperature region 12 are formed. In addition, one continuous temperature control heater 4 is formed.
- the temperature adjusting heaters 4 formed in the first temperature adjusting heater forming region 6a adjacent to both sides of the first reaction channel forming region 5a are continuously formed, In one temperature region 10, one continuous temperature control heater 4 is formed.
- reaction flow channels 3 formed in the third reaction flow channel formation region 5 adjacent to both sides of the third temperature control heater formation region 6 are formed in communication with each other, In the third temperature region 12, one continuous reaction channel 3 is formed.
- microfluidic device 1 in which three rows of temperature regions are juxtaposed can be manufactured. Further, if one continuous reaction channel 3 and / or temperature control heater 4 straddling two temperature regions is increased, four or more temperature regions can be formed.
- the microfluidic device 1 is formed in one temperature control heater forming region 6 included in the first temperature region 10, the second temperature region 11, and the third temperature region 12.
- the number of turns of the temperature control heater 4 may be two or more. Thereby, the reaction efficiency of the fluid (reactive substance etc.) in the reaction flow path 3 can be raised.
- the microfluidic device 1 is formed in one reaction channel forming region 5 included in the first temperature region 10, the second temperature region 11, and the third temperature region 12.
- the number of times of folding the reaction channel 3 may be two or more.
- a microfluidic device with a heater having a simple structure that does not require a close contact means for improving heat transfer between the heater block and the device. 1 can provide a miniaturized microfluidic device 1 that can form a uniform temperature region. Furthermore, since a temperature region having three or more different temperatures can be formed, the fluid in the reaction channel 3 can be adjusted to various temperatures, and a microfluidic device with good temperature control can be provided. it can.
- the device of the present invention can be applied to a polymerase chain reaction (PCR) device.
- the PCR method is a reaction for amplifying the number of DNA (deoxyribonucleic acid). Specifically, the denaturation temperature (about 95 ° C.), annealing temperature (about 60 ° C.), and extension temperature (about 60 to 75 ° C.) are applied to the reaction solution containing the DNA fragment to be amplified, the polymerase enzyme, and the primer. The DNA is increased exponentially by repeating about 30 to 50 cycles.
- a high temperature range for example, 95 ° C. to 98 ° C.
- a low temperature range for example, 50 ° C. to 75 ° C.
- the time for staying in each temperature region is controlled by controlling the speed of the reaction fluid. According to the present invention, since the temperature in the temperature region can be controlled uniformly, the reaction can be repeated at the same temperature in all PCR cycles, so that very efficient amplification is possible.
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Abstract
Description
前記基板上に、前記反応流路が形成された反応流路形成領域と、前記温度調節ヒータが形成された温度調節ヒータ形成領域と、が交互に配置され、
前記反応流路形成領域に、反応流路が少なくとも1回折り返して形成され、
前記温度調節ヒータ形成領域に、温度調節ヒータが少なくとも1回折り返して形成されたことを特徴とする。
前記第1の温度領域と前記第2の温度領域とが、前記一方向とは異なる方向に並置されてなることを特徴とする。
近接する、第1の反応流路形成領域および第2の反応流路形成領域に形成された反応流路同士が連通して形成されていることを特徴とする。
近接する、第1の温度調節ヒータ形成領域および第2の温度調節ヒータ形成領域に形成された温度調節ヒータ同士が連続して形成されていることが好ましい。
図1は、本発明の実施の形態1に係るマイクロ流体デバイス1の斜視図である。図1に示すように、実施の形態1に係るマイクロ流体デバイス1は、基板2と、基板2上に形成された反応流路3と、基板2上に反応流路3に近接して形成された温度調節ヒータ4であって、反応流路3を加熱するために設けられた温度調節ヒータ4と、を備える。
図3は、本発明の実施の形態2に係るマイクロ流体デバイス1であって、温度領域(第1の温度領域10、第2の温度領域11)が2列並置された態様に係るマイクロ流体デバイス1の上面図である。
図8は、本発明の実施の形態3に係るマイクロ流体デバイス1であって、温度領域(第1の温度領域10、第2の温度領域11、第3の温度領域12)が3列並置されたマイクロ流体デバイス1の上面図である。実施の形態2においては、温度領域が2列並置されているのに対して、実施の形態3においては、温度領域が3列並置されている点で異なる。それ以外の点で、実施の形態1、2と同様である。
2 基板
3 反応流路
4 温度調節ヒータ
5 反応流路形成領域
5a 第1の反応流路形成領域
5b 第2の反応流路形成領域
6 温度調節ヒータ形成領域
6a 第1の温度調節ヒータ形成領域
6b 第2の温度調節ヒータ形成領域
10 第1の温度領域
11 第2の温度領域
12 第3の温度領域
Claims (15)
- 基板と、該基板に形成された反応流路と、前記反応流路を加熱する温度調節ヒータと、を備えるマイクロ流体デバイスであって、
前記基板上に、前記反応流路が形成された反応流路形成領域と、前記温度調節ヒータが形成された温度調節ヒータ形成領域と、が交互に配置され、
前記反応流路形成領域に、反応流路が少なくとも1回折り返して形成され、
前記温度調節ヒータ形成領域に、温度調節ヒータが少なくとも1回折り返して形成されたマイクロ流体デバイス。 - それぞれ前記反応流路形成領域と前記温度調節ヒータ形成領域とが一方向に交互に配置されてなる第1の温度領域と第2の温度領域とを有し、
前記第1の温度領域と前記第2の温度領域とが、前記一方向とは異なる方向に並置されてなる請求項1記載のマイクロ流体デバイス。 - 前記第1の温度領域に含まれる第1の反応流路形成領域と、前記第2の温度領域に含まれる第2の反応流路形成領域と、が互い違いに配置され、
近接する、第1の反応流路形成領域および第2の反応流路形成領域に形成された反応流路同士が連通して形成された請求項2記載のマイクロ流体デバイス。 - 前記第1の温度領域に含まれる第1の温度調節ヒータ形成領域と、前記第2の温度領域に含まれる第2の温度調節ヒータ形成領域と、が互い違いに配置され、
近接する、第1の温度調節ヒータ形成領域および第2の温度調節ヒータ形成領域に形成された温度調節ヒータ同士が連続して形成された請求項2記載のマイクロ流体デバイス。 - 一の前記温度調節ヒータ形成領域に、折り返し蛇行して形成された温度調節ヒータを2以上有してなる請求項1~4のいずれかに記載のマイクロ流体デバイス。
- 一の前記反応流路形成領域に、それぞれ折り返し蛇行して形成され分離された反応流路を2以上有してなる請求項1~5のいずれかに記載のマイクロ流体デバイス。
- 一の前記温度調節ヒータ形成領域における前記温度調節ヒータの折り返しの回数が、1~10である請求項1~6のいずれかに記載のマイクロ流体デバイス。
- 一の前記反応流路形成領域における前記反応流路の折り返しの回数が、1~10である請求項1~7のいずれかに記載のマイクロ流体デバイス。
- 保護基板をさらに備え、
前記保護基板により、前記基板に外方開口して形成された反応流路及び前記基板に配置された温度調節ヒータが覆われてなる請求項1~8のいずれかに記載のマイクロ流体デバイス。 - 前記2以上の温度領域の境界において、分離溝を有する請求項2に記載のマイクロ流体デバイス。
- 前記境界において、前記基板の裏面から表面に貫通するように形成された貫通孔をさらに備える請求項10記載のマイクロ流体デバイス。
- 前記温度調節ヒータが形成されている面と、前記基板の表面と、の間に段差が形成され、前記温度調節ヒータが、前記基板の表面から突出していない請求項1~11のいずれかに記載のマイクロ流体デバイス。
- 前記温度調節ヒータが、金属薄膜ヒータである請求項1~12のいずれかに記載のマイクロ流体デバイス。
- 前記2以上の温度調節ヒータが別々に温度調節可能である請求項5記載のマイクロ流体デバイス。
- 請求項1~14のいずれかに記載されたマイクロ流体デバイスを用いた、ポリメラーゼ連鎖反応デバイス。
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