Systems and methods for thermal actuation of microfluidic devices
First Claim
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1. A method of using a microfluidic system, comprising:
- providing a first device comprising a first substrate defining a microfluidic network comprising at least one of each of a thermally actuated valve and a thermally actuated reaction chamber;
operatively receiving the first device in a second device, the second device comprising a second substrate defining a plurality of heat sources, each heat source being in thermal communication with a respective one of the thermally actuated valve and the thermally actuated reaction chamber of the first device, wherein at least one of the heat sources is a combined heating and temperature sensing element; and
controlling each heat source of the plurality of heat sources independently.
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Abstract
A microfluidic processing device includes a substrate defining a microfluidic network. The substrate is in thermal communication with a plurality of N independently controllable components and a plurality of input output contacts for connecting the substrate to an external controller. Each component has at least two terminals. Each terminal is in electrical communication with at least one contact. The number of contacts required to independently control the N components is substantially less than the total number of terminals. Upon actuation, the components typically heat a portion of the microfluidic network and/or sense a temperature thereof.
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24 Claims
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1. A method of using a microfluidic system, comprising:
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providing a first device comprising a first substrate defining a microfluidic network comprising at least one of each of a thermally actuated valve and a thermally actuated reaction chamber; operatively receiving the first device in a second device, the second device comprising a second substrate defining a plurality of heat sources, each heat source being in thermal communication with a respective one of the thermally actuated valve and the thermally actuated reaction chamber of the first device, wherein at least one of the heat sources is a combined heating and temperature sensing element; and controlling each heat source of the plurality of heat sources independently. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of using a microfluidic system, comprising:
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providing a first device comprising a first substrate defining a microfluidic network comprising at least one of each of a thermally actuated valve and a thermally actuated reaction chamber; operatively receiving the first device in a second device, the second device comprising a second substrate defining a plurality of heat sources, each heat source being in thermal communication with a respective one of the thermally actuated valve and the thermally actuated reaction chamber of the first device, wherein at least one of the heat sources is a combined heating and temperature sensing element; and heating a thermally responsive substance and moving the thermally responsive substance into a channel of the microfluidic network. - View Dependent Claims (15, 16)
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17. A method of using a microfluidic system, comprising:
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providing a first device comprising a first substrate defining a microfluidic network comprising at least one of each of a thermally actuated valve and a thermally actuated reaction chamber; operatively receiving the first device in a second device, the second device comprising a second substrate defining a plurality of heat sources, each heat source being in thermal communication with a respective one of the thermally actuated valve and the thermally actuated reaction chamber of the first device, wherein at least one of the heat sources is a combined heating and temperature sensing element; and generating an amount of heat from a first heat source of the plurality of heat sources to actuate a first thermally actuated component but insufficient to actuate a second thermally actuated component. - View Dependent Claims (18, 19, 20)
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21. A method of using a microfluidic s stem, comprising:
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providing a first device comprising a first substrate defining a microfluidic network comprising at least one of each of a thermally actuated valve and a thermally actuated reaction chamber; operatively receiving the first device in a second device, the second device comprising a second substrate defining a plurality of heat sources, each heat source being in thermal communication with a respective one of the thermally actuated valve and the thermally actuated reaction chamber of the first device, wherein at least one of the heat sources is a combined heating and temperature sensing element; and actuating one of the plurality of heat sources such that current flows in essentially only one direction through the heat source. - View Dependent Claims (22, 23, 24)
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Specification