Non-contact infrared thermocycling
First Claim
1. An apparatus, comprising:
- a plurality of reaction chambers, each reaction chamber to hold a fluid;
a heat source to heat the reaction chamber and the fluid, wherein the heat source does not contact the reaction chamber or the fluid, and the reaction chamber and the fluid separately absorb heat radiation from the heat source, the heat source including a plurality of infrared lasers, each infrared laser having a different wavelength, outputs of the infrared lasers being coupled together as to form a single heat source for the reaction chamber;
a temperature sensor to acquire a temperature of the reaction chamber and/or the fluid; and
control circuitry configured to control the heat source independently for each of the reaction chambers according to a corresponding cycling profile for a chemical or biochemical reaction in the fluid to cycle the heat source between heating and not heating each of the reaction chambers and the fluid based on a corresponding temperature acquired by the temperature sensor.
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Accused Products
Abstract
A microfluidic chip includes one or more reaction chambers to hold fluids for chemical or biochemical reactions, such as PCR. A non-contact heat source heats the reaction chamber and the fluid, such that the heat source does not contact the reaction chamber or the fluid. The heat source can heat the reaction chamber and the fluid separately, where the reaction chamber and the fluid separately absorb heat radiation from the heat source. A temperature sensor acquires a temperature of the reaction chamber and/or the fluid. Control circuitry controls the heat source according to a cycling profile for the reaction in the fluid to cycle the heat source between heating and not heating the reaction chamber and the fluid based on the temperature acquired by the temperature sensor. Cooling can be provided passively or actively.
32 Citations
19 Claims
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1. An apparatus, comprising:
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a plurality of reaction chambers, each reaction chamber to hold a fluid; a heat source to heat the reaction chamber and the fluid, wherein the heat source does not contact the reaction chamber or the fluid, and the reaction chamber and the fluid separately absorb heat radiation from the heat source, the heat source including a plurality of infrared lasers, each infrared laser having a different wavelength, outputs of the infrared lasers being coupled together as to form a single heat source for the reaction chamber; a temperature sensor to acquire a temperature of the reaction chamber and/or the fluid; and control circuitry configured to control the heat source independently for each of the reaction chambers according to a corresponding cycling profile for a chemical or biochemical reaction in the fluid to cycle the heat source between heating and not heating each of the reaction chambers and the fluid based on a corresponding temperature acquired by the temperature sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for a reaction, comprising:
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independently controlling, by control circuitry, heating and cooling of each of a plurality of reaction chambers, each contains a fluid in which an reaction is to occur, in accordance with a corresponding cycling profile based on sensing a corresponding temperature of each of the reaction chambers or the fluid, each cycling profile including; (a) heating to a first temperature at a first rate; (b) holding the first temperature for a first holding time; (c) cooling to a second temperature at a second rate; (d) holding the second temperature for a second holding time; (e) heating to a third temperature at a third rate; and (f) holding the third temperature for a third holding time, wherein a reaction chamber is heated by a heat source including a plurality of infrared lasers, each infrared laser having a different wavelength, outputs of the infrared lasers being coupled together as to form a single heat source for the reaction chamber. - View Dependent Claims (18)
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19. An apparatus, comprising:
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a reaction chamber to hold a fluid; a non-contact heat source to heat the reaction chamber and the fluid, wherein the heat source does not contact the reaction chamber or the fluid, and the reaction chamber and the fluid separately absorb heat radiation from the heat source; a temperature sensor to acquire a temperature of the reaction chamber and/or the fluid; and control circuitry configured to control the heat source according to a cycling profile for a chemical or biochemical reaction in the fluid to cycle the heat source between heating and not heating the reaction chamber and the fluid based on the temperature acquired by the temperature sensor, wherein the heat source includes an output for non-contact heating for each of the reaction chambers, the temperature sensor is to acquire a separate temperature for each of the reaction chambers, and the control circuitry is configured to control the heat source independently for each of the reaction chambers based on the respective temperatures acquired by the temperature sensor and the cycling profile, wherein the heat source includes one or more infrared lasers and the one or more infrared lasers operate at 1720 nm+/−
10 nm center wavelength.
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Specification