Microfluidic devices with integrated resistive heater electrodes including systems and methods for controlling and measuring the temperatures of such heater electrodes
First Claim
1. A method for determining a selected characteristic of at least one electronic component in a network comprising more than one of said electronic components to control power supplied to the at least one electronic component, wherein all electronic components in the network are all either of resistive type, inductive type, or capacitive type, the method comprising the steps of:
- a. generating N distinct partitions of the components, whereinN is equal to the number of components in the network,each partition divides the components into at least a source set and a drain set, wherein the source set and the drain set don'"'"'t have common components andat least one of the source set and the drain set in each partition comprises two or more of the components;
b. for each partition;
(1) connecting a source voltage to each component in the source set, wherein the drain set is disconnected from the source voltage, wherein the source set does not include the source voltage,(2) connecting a drain voltage to each component in the drain set, and(3) measuring the equivalent selected characteristic of a circuit between the source voltage and the drain voltage, wherein the circuit comprises a parallel combination of each component in the source set in series with a parallel combination of each component in the drain set and the drain voltage is measured at the drain set;
c. computing the selected characteristic of the at least one component based at least in part on the stored equivalent characteristics; and
d. controlling power supplied to the at least one electronic component in the network based on the computed characteristic of the at least one component.
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Abstract
The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, a microfluidic device is provided that includes a microfluidic chip having a plurality of microfluidic channels and a plurality of multiplexed heater electrodes, wherein the heater electrodes are part of a multiplex circuit including a common lead connecting the heater electrodes to a power supply, each of the heater electrodes being associated with one of the microfluidic channels. The microfluidic device also includes a control system configured to regulate power applied to each heater electrode by varying a duty cycle, the control system being further configured to determine the temperature of each heater electrode by determining the resistance of each heater electrode.
61 Citations
12 Claims
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1. A method for determining a selected characteristic of at least one electronic component in a network comprising more than one of said electronic components to control power supplied to the at least one electronic component, wherein all electronic components in the network are all either of resistive type, inductive type, or capacitive type, the method comprising the steps of:
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a. generating N distinct partitions of the components, wherein N is equal to the number of components in the network, each partition divides the components into at least a source set and a drain set, wherein the source set and the drain set don'"'"'t have common components and at least one of the source set and the drain set in each partition comprises two or more of the components; b. for each partition; (1) connecting a source voltage to each component in the source set, wherein the drain set is disconnected from the source voltage, wherein the source set does not include the source voltage, (2) connecting a drain voltage to each component in the drain set, and (3) measuring the equivalent selected characteristic of a circuit between the source voltage and the drain voltage, wherein the circuit comprises a parallel combination of each component in the source set in series with a parallel combination of each component in the drain set and the drain voltage is measured at the drain set; c. computing the selected characteristic of the at least one component based at least in part on the stored equivalent characteristics; and d. controlling power supplied to the at least one electronic component in the network based on the computed characteristic of the at least one component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification