WO2024139806A1 - 微流控芯片及其应用 - Google Patents
微流控芯片及其应用 Download PDFInfo
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- WO2024139806A1 WO2024139806A1 PCT/CN2023/131675 CN2023131675W WO2024139806A1 WO 2024139806 A1 WO2024139806 A1 WO 2024139806A1 CN 2023131675 W CN2023131675 W CN 2023131675W WO 2024139806 A1 WO2024139806 A1 WO 2024139806A1
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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
- B01L3/502761—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads or physically stretching molecules
-
- 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
- B01L3/502769—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 multiphase flow arrangements
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/0036—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity
- H01F1/0045—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use
- H01F1/0054—Coated nanoparticles, e.g. nanoparticles coated with organic surfactant
-
- 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
-
- 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
-
- 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
- B01J2219/00889—Mixing
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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
- B01J2219/0095—Control aspects
- B01J2219/00952—Sensing operations
- B01J2219/00954—Measured properties
- B01J2219/00961—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/12—Specific details about manufacturing devices
-
- 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
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
Definitions
- the present application belongs to the field of microfluidics technology, and specifically relates to a microfluidics chip and its application.
- Magnetic nanoparticles refer to particles with a particle size of less than 100nm, and the main component is metal oxide. Since the physical and chemical properties of nanoparticles depend on their size and morphology, it is particularly important to synthesize nanoparticles with controllable size and shape. As an important component in the synthesis of magnetic microspheres, the uniformity and size of magnetic nanoparticles greatly affect the magnetic responsiveness and particle size of magnetic beads.
- the invention comprises a sample injection chamber, a first heating chamber, a second heating chamber, a collecting chamber, a microchannel for connecting the chambers and a heating machine.
- the first injection chamber and the second injection chamber are located upstream of the first heating chamber and are both communicated with the first heating chamber.
- the fourth injection chamber is located downstream of the first heating chamber and upstream of the second heating chamber, and the fourth injection chamber is communicated with the second heating chamber.
- the heating mechanism is used to independently heat the first heating chamber and the second heating chamber.
- the first injection chamber and the second injection chamber are connected to the first heating chamber after merging in a microchannel upstream of the first heating chamber.
- the microchannel for connecting the first heating chamber and the second heating chamber is in the shape of a serpentine tube.
- connection position between the third injection chamber and the microfluidic channel for connecting the first heating chamber and the second heating chamber is located at the most upstream of the bending part of the serpentine microfluidic channel.
- the second heating chamber has a plurality of independent sub-chambers therein, and the solution entering the second heating chamber is divided and heated by the plurality of sub-chambers and then merged into the collection chamber.
- the number of the sub-cavities is 6 to 10, and the width of each sub-cavity is the same.
- the temperature in the first heating chamber is controlled to be 45°C to 55°C
- the temperature in the second heating chamber is controlled to be 65°C to 75°C.
- the solution with a pH greater than 7 includes one or both of ammonia water or NaOH solution with a volume concentration of 2%.
- FIG6 is a TEM image of the magnetic nanoparticles synthesized in Example 5.
- the heating mechanism is used to heat the first heating chamber 115 and the second heating chamber 116 independently.
- connection position between the third injection chamber 113 and the microfluidic channel for connecting the first heating chamber 115 and the second heating chamber 116 is located at the most upstream of the bending part of the serpentine microfluidic channel.
- the second heating chamber 116 has a plurality of independent sub-chambers therein, and the solution entering the second heating chamber 116 is divided and heated by the plurality of sub-chambers and then merged into the collection chamber.
- the number of sub-cavities is 6 to 10, and the widths of the sub-cavities are the same.
- the number may be 6, 7, 8, 9, or 10.
- the temperature in the first heating chamber 115 is controlled to be 45°C to 55°C
- the temperature in the second heating chamber 116 is controlled to be 65°C to 75°C.
- the temperature in the first heating chamber 115 is 45°C, 46°C, 47°C, 48°C, 49°C, 50°C, 51°C, 52°C, 53°C, 54°C, and 55°C.
- the temperature in the second heating chamber 116 is 65°C, 66°C, 67°C, 68°C, 69°C, 70°C, 71°C, 72°C, 73°C, 74°C, and 75°C.
- the injection flow rate of the second injection chamber 112 is 0.2 mL/min to 0.3 mL/min, such as 0.2 mL/min, 0.25 mL/min, and 0.3 mL/min.
- the measured parameters of raw material components may have slight deviations within the range of weighing accuracy unless otherwise specified.
- acceptable deviations caused by instrument test accuracy or operation accuracy are allowed.
- ammonia water with a volume concentration of 2% is introduced through the third injection chamber at a flow rate of 0.5 mL/min and mixed with the mixed liquid in the first heating chamber at a rate of 2:1.
- the oil phase is introduced through the fourth injection chamber at a rate of 1 mL/min to form a mixture of FeCl3 solution, FeCl2 solution and NaOH solution.
- the droplets will form two velocity fields in opposite directions during the droplet generation process, and the solution will be mixed inside.
- the liquid After being fully mixed, the liquid enters the 8 channels in the second heating chamber, and each channel is equally divided to ensure uniform heating.
- a heating plate is set at the bottom of the second heating chamber to raise its temperature to 70°C. Subsequently, after the droplets pass through the channels, the magnetic nanoparticles produced are collected, and the TEM of the obtained magnetic nanoparticles is shown in Figure 2.
- the liquid After being fully mixed, the liquid enters the 8 channels in the second heating chamber, and each channel is equally divided to ensure uniform heating.
- a heating plate is set at the bottom of the second heating chamber to raise its temperature to 70°C. Subsequently, after the droplets pass through the channels, the desired magnetic nanoparticles are collected, and the TEM of the obtained magnetic nanoparticles is shown in Figure 3.
- Example 3 Medium concentration iron salt + high concentration NaOH + oil phase encapsulation:
- 1 mol/L NaOH is introduced into the third injection chamber at a flow rate of 0.5 mL/min and fused with the mixed liquid in the first heating chamber at a rate of 2:1; after sufficient fusion through the serpentine tubular microfluidic channel, the oil phase is introduced through the fourth injection chamber at a rate of 1 mL/min to form a mixture of FeCl 3 solution, FeCl 2 solution and NaOH solution.
- the droplets will form two velocity fields in opposite directions during the droplet generation process, and the solution will be mixed inside.
- each channel is equally divided to ensure The heat is uniform.
- a heating plate is set at the bottom of the second heating chamber to raise its temperature to 70°C. Subsequently, after the droplets pass through the channel, the desired magnetic nanoparticles are collected. The TEM of the obtained magnetic nanoparticles is shown in Figure 4.
- the solution was transferred to a 50 mL centrifuge tube, and the magnetic nanoparticles were separated using a magnetic rack, and washed once with anhydrous ethanol and once with deionized water.
- the magnetic nanoparticles were obtained, as shown in FIG10 .
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- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Clinical Laboratory Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Physical Or Chemical Processes And Apparatus (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
Claims (13)
- 一种微流控芯片,其特征在于,包括进样腔、第一加热腔、第二加热腔、收集腔、用于连接各腔体的微流道以及加热机构;其中,所述进样腔包括第一进样腔、第二进样腔、第三进样腔和第四进样腔;所述第一加热腔、所述第二加热腔与所述收集腔通过所述微流道依次连通;所述第一进样腔和所述第二进样腔位于所述第一加热腔的上游且均与所述第一加热腔连通;所述第三进样腔与用于连通所述第一加热腔和所述第二加热腔的微流道连通;所述第四进样腔位于所述第一加热腔的下游且位于所述第二加热腔的上游,所述第四进样腔与所述第二加热腔连通;所述加热机构用于对所述第一加热腔和所述第二加热腔进行独立地加热。
- 根据权利要求1所述的微流控芯片,其特征在于,所述第一进样腔与所述第二进样腔在所述第一加热腔上游的微流道合并后与所述第一加热腔连通。
- 根据权利要求1所述的微流控芯片,其特征在于,与所述第四进样腔连通的微流道与用于连通所述第一加热腔和所述第二加热腔的微流道合并后与所述第二加热腔连通。
- 根据权利要求1所述的微流控芯片,其特征在于,用于连通所述第一加热腔和所述第二加热腔的微流道呈蛇形管状。
- 根据权利要求4所述的微流控芯片,其特征在于,所述第三进样腔与用于连通所述第一加热腔和所述第二加热腔之间的微流道的连接位置位于所述蛇形管状的微流道的弯曲部位的最上游。
- 根据权利要求1所述的微流控芯片,其特征在于,所述第二加热腔的内 部具有多个独立的分腔,进入所述第二加热腔的溶液经多个所述分腔分流加热后再合流至所述收集腔。
- 根据权利要求6所述的微流控芯片,其特征在于,所述分腔的数量为6~10个;可选地,各所述分腔的宽度一致。
- 一种合成磁性纳米颗粒的方法,其特征在于,采用如权利要求1~7中任一项所述的微流控芯片合成。
- 根据权利要求8所述的合成磁性纳米颗粒的方法,其特征在于,包括:向所述第一进样腔和所述第二进样腔分别加入FeCl3溶液和FeCl2溶液,向所述第三进样腔加入pH大于7的溶液,向所述第四进样腔加入油相;对所述第一加热腔和第二加热腔进行加热处理;从所述收集腔收集反应产物。
- 根据权利要求9所述的合成磁性纳米颗粒的方法,其特征在于,所述对所述第一加热腔和第二加热腔进行加热处理时,控制所述第一加热腔内的温度为45℃~55℃,所述第二加热腔内的温度为65℃~75℃。
- 根据权利要求9所述的合成磁性纳米颗粒的方法,其特征在于,所述第一进样腔的进样流速为0.4mL/min~0.6mL/min,所述第二进样腔的进样流速为0.2mL/min~0.3mL/min,所述第三进样腔的进样流速为0.4mL/min~0.6mL/min,所述第四进样腔的进样流速为0.5mL/min~1.5mL/min。
- 根据权利要求9~11任一项所述的合成磁性纳米颗粒的方法,其特征在于,所述pH大于7的溶液包括体积浓度2%的氨水或NaOH溶液中的一种或两种;所述油相包括液状石蜡和硅油中的一种或两种。
- 一种磁性纳米颗粒,其特征在于,采用权利要求8~12任一项所述的合成磁性纳米颗粒的方法制备得到。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23909738.9A EP4591974A4 (en) | 2022-12-26 | 2023-11-15 | MICROFLUID CHIP AND ASSOCIATED APPLICATION |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211671322.X | 2022-12-26 | ||
| CN202211671322.XA CN116037025B (zh) | 2022-12-26 | 2022-12-26 | 微流控芯片及其应用 |
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| WO2024139806A1 true WO2024139806A1 (zh) | 2024-07-04 |
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| PCT/CN2023/131675 Ceased WO2024139806A1 (zh) | 2022-12-26 | 2023-11-15 | 微流控芯片及其应用 |
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| Country | Link |
|---|---|
| EP (1) | EP4591974A4 (zh) |
| CN (1) | CN116037025B (zh) |
| WO (1) | WO2024139806A1 (zh) |
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| CN116037025B (zh) * | 2022-12-26 | 2025-12-16 | 深圳市亚辉龙生物科技股份有限公司 | 微流控芯片及其应用 |
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2022
- 2022-12-26 CN CN202211671322.XA patent/CN116037025B/zh active Active
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2023
- 2023-11-15 EP EP23909738.9A patent/EP4591974A4/en active Pending
- 2023-11-15 WO PCT/CN2023/131675 patent/WO2024139806A1/zh not_active Ceased
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| CN104229901A (zh) * | 2014-10-11 | 2014-12-24 | 中南林业科技大学 | 一种磁性四氧化三铁纳米粒子的制备方法 |
| KR20200066452A (ko) * | 2018-11-30 | 2020-06-10 | 서강대학교산학협력단 | 자성산화철 나노입자 형성방법 |
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| CN116037025A (zh) * | 2022-12-26 | 2023-05-02 | 深圳市亚辉龙生物科技股份有限公司 | 微流控芯片及其应用 |
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| Publication number | Publication date |
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| CN116037025B (zh) | 2025-12-16 |
| CN116037025A (zh) | 2023-05-02 |
| EP4591974A1 (en) | 2025-07-30 |
| EP4591974A4 (en) | 2026-01-21 |
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