Manipulation of fluids and reactions in microfluidic systems
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-001/38
B01L-003/00
C30B-007/00
C30B-029/58
B01L-003/06
B01L-007/00
출원번호
US-0577652
(2014-12-19)
등록번호
US-9440232
(2016-09-13)
발명자
/ 주소
Fraden, Seth
Cristobal-Azkarate, Galder
출원인 / 주소
Raindance Technologies, Inc.
대리인 / 주소
Brown Rudnick LLP
인용정보
피인용 횟수 :
0인용 특허 :
460
초록▼
Microfluidic structures and methods for manipulating fluids and reactions are provided. Such structures and methods may involve positioning fluid samples, e.g., in the form of droplets, in a carrier fluid (e.g., an oil, which may be immiscible with the fluid sample) in predetermined regions in a mic
Microfluidic structures and methods for manipulating fluids and reactions are provided. Such structures and methods may involve positioning fluid samples, e.g., in the form of droplets, in a carrier fluid (e.g., an oil, which may be immiscible with the fluid sample) in predetermined regions in a microfluidic network. In some embodiments, positioning of the droplets can take place in the order in which they are introduced into the microfluidic network (e.g., sequentially) without significant physical contact between the droplets. Because of the little or no contact between the droplets, there may be little or no coalescence between the droplets. Accordingly, in some such embodiments, surfactants are not required in either the fluid sample or the carrier fluid to prevent coalescence of the droplets. Structures and methods described herein also enable droplets to be removed sequentially from the predetermined regions.
대표청구항▼
1. A method, comprising: providing a microfluidic network comprising five or more sections in a serial arrangement, each section comprising a first microchannel, a second microchannel, a microwell, and a junction, wherein the junction is fluidicly coupled to the first and second microchannels and th
1. A method, comprising: providing a microfluidic network comprising five or more sections in a serial arrangement, each section comprising a first microchannel, a second microchannel, a microwell, and a junction, wherein the junction is fluidicly coupled to the first and second microchannels and the microwell, and the microwell comprises a constricted fluidic path that exits the microwell;flowing an oil in the microfluidic network;flowing a plurality of aqueous droplets in the microfluidic network;positioning each of the plurality of aqueous droplets in the microwells of a plurality of the sections, wherein each microwell has at most one positioned aqueous droplet; andmaintaining the positioned aqueous droplets in the microwells while the oil is flowing in the microfluidic network. 2. The method of claim 1, wherein the oil does not comprise a surfactant. 3. The method of claim 1, wherein the aqueous droplets do not come into physical contact with each other during the positioning or maintaining steps. 4. The method of claim 1, wherein positioning or maintaining at least one aqueous droplet is independent of a flow rate of the oil in the microfluidic channel. 5. The method of claim 1, wherein the aqueous droplets are sequentially positioned. 6. The method of claim 1, wherein the aqueous droplets comprise different aqueous fluids. 7. The method of claim 1, wherein the first and second microfluidic channels have a maximum cross sectional dimension of 500 microns or smaller. 8. The method of claim 1, wherein the first and second microfluidic channels have a maximum cross sectional dimension of 100 microns or smaller. 9. The method of claim 1, wherein the aqueous droplets have a volume of less than 1 nL. 10. The method of claim 1, wherein the oil is a fluorinated oil.
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