MICROFLUIDIC CHAOTIC MIXING SYSTEMS AND METHODS
First Claim
1. A microfluidic nucleic acid hybridization system comprising:
- a first reaction chamber to hold an analyte solution comprising nucleic acids;
a first mixing channel in fluid communication with the chamber, wherein the channel includes a textured surface to mix the analyte solution;
a pump coupled to the mixing channel to circulate the analyte solution through the reaction chamber and the mixing channel;
an input port in fluid communication with the mixing channel and the reaction chamber to supply the analyte solution to the microfluidic system, wherein the input port can be closed to create a closed circulation path for the analyte solution through the reaction chamber and the mixing channel.
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Abstract
Microfluidic nucleic acid hybridization systems are described that include a first reaction chamber to hold an analyte solution comprising nucleic acids, and a first mixing channel in fluid communication with the chamber. The mixing channel includes a textured surface to mix the analyte solution. The systems may also include pump coupled to the mixing channel to circulate the analyte solution through the reaction chamber and the mixing channel, and an input port in fluid communication with the mixing channel and the reaction chamber to supply the analyte solution to the microfluidic system. The input port can be closed to create a closed circulation path for the analyte solution through the reaction chamber and the mixing channel.
44 Citations
30 Claims
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1. A microfluidic nucleic acid hybridization system comprising:
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a first reaction chamber to hold an analyte solution comprising nucleic acids;
a first mixing channel in fluid communication with the chamber, wherein the channel includes a textured surface to mix the analyte solution;
a pump coupled to the mixing channel to circulate the analyte solution through the reaction chamber and the mixing channel;
an input port in fluid communication with the mixing channel and the reaction chamber to supply the analyte solution to the microfluidic system, wherein the input port can be closed to create a closed circulation path for the analyte solution through the reaction chamber and the mixing channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of chaotically mixing and hybridizing a nucleic acid solution in a microfluidic system, the method comprising:
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providing the nucleic acid solution to a first reaction chamber, wherein the reaction chamber contains nucleic acid hybridization sites;
circulating the nucleic acid solution a plurality of times through a mixing channel coupled to the reaction chamber, wherein the solution is mixed as it flows across a textured surface of the mixing channel to mix the solution; and
hybridizing nucleic acids in the solution to one of the hybridization sites. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A microfluidic nucleic acid hybridization system comprising:
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a glass substrate having an array of nucleic acids on a top surface of the substrate;
a first elastomeric layer attached to the top surface of the glass substrate, wherein the elastomeric layer has a first and second reaction chamber formed therein, and wherein the top surface of the substrate forms an inside surface of each reaction chamber;
a mixing channel that is also formed in the first elastomeric layer, where the mixing channel is in fluid communication with the first and second reaction chamber, and wherein the mixing channel has a textured surface with a herring-bone pattern to mix a nucleic acid solution flowing through the channel;
a second elastomeric layer formed on the first elastomeric layer, wherein the second elastomeric layer has a series of control channels that activate a microfluidic peristaltic pump in the mixing channel; and
an input port in fluid communication with the mixing channel and the reaction chamber to supply the nucleic acid solution to the microfluidic system, wherein the input port is coupled to a closable microvalve that creates a closed circulation path for the nucleic acid solution between the reaction chamber and the mixing channel.
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Specification