Multiplexed droplet actuation and sensing in digital microfluidics
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United States of America Patent
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Mar 30, 2021
Grant Date -
Jul 4, 2019
app pub date -
Aug 17, 2017
filing date -
Aug 22, 2016
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Abstract
The present disclosure discloses a multi-droplet sensing and actuation system, for use in a digital microfluidic chip operation wherein a linearly independent alternating current signal is applied to each discrete actuation electrode thus encoding the electrode's identity. The combined measured impedance signal from multiple channels is then processed to decode an impedance measurement for the volume between each discrete actuation electrode and its corresponding conductive counter electrode region, where the sensed impedance is inversely proportional to an amount of liquid within the volume.
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