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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0892559 (2013-05-13) |
등록번호 | US-8734733 (2014-05-27) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 29 인용 특허 : 558 |
The present relates to a system and method for preventing or reducing unwanted heat in a microfluidic of the device while generating heat in selected regions of the device. Current can be supplied to a heating element through electric leads that are designed so that the current density in the leads
The present relates to a system and method for preventing or reducing unwanted heat in a microfluidic of the device while generating heat in selected regions of the device. Current can be supplied to a heating element through electric leads that are designed so that the current density in the leads is substantially lower than the current density in the heating element. Unwanted heat in the microfluidic complex can be reduced by thermally isolating the electric leads from the microfluidic complex by, for example, running each lead directly away from the microfluidic complex. Unwanted heat can be removed from selected regions of the microfluidic complex using one or more cooling devices.
1. An integrated microfluidic processing system comprising a microfluidic device, the device comprising: a microfluidic complex comprising at least one thermally actuated component;a thermally insulating substrate comprising a heating element configured to actuate the at least one thermally actuated
1. An integrated microfluidic processing system comprising a microfluidic device, the device comprising: a microfluidic complex comprising at least one thermally actuated component;a thermally insulating substrate comprising a heating element configured to actuate the at least one thermally actuated component; andat least one conductive lead for supplying electrical current from a current source to the heating element, wherein the lead has a lower current density than the heating element. 2. The system of claim 1, wherein the thermally actuated component comprises a valve. 3. The system of claim 1, wherein the thermally actuated component comprises a meltable material. 4. The system of claim 3, wherein the meltable material comprises wax or solder. 5. The system of claim 1, wherein the microfluidic complex comprises a plurality of flow channels, each flow channel comprising a reaction chamber. 6. The system of claim 5, wherein the heating element is further configured to heat at least one reaction chamber. 7. The system of claim 5, wherein the thermally insulating substrate further comprises a second heating element configured to heat at least one reaction chamber. 8. The system of claim 1, wherein the microfluidic device comprises a second substrate in thermal communication with the thermally insulating substrate, the microfluidic complex defined in part by the second substrate. 9. The system of claim 1, wherein the heating element and the at least one conductive lead each comprise a vertical thickness dimension in a direction orthogonal to a plane in which the thermally insulating substrate lies, wherein the vertical thickness dimension of the at least one conductive lead is greater than the vertical thickness dimension of the heating element. 10. The system of claim 1, wherein the heating element and the at least one conductive lead each comprise a horizontal thickness dimension in a direction parallel to a plane in which the thermally insulating substrate lies, wherein the horizontal thickness dimension of the at least one conductive lead is greater than the horizontal thickness dimension of the heating element.
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