Multiplexed droplet actuation and sensing in digital microfluidics

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...

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Bibliographic Details
Main Authors Wheeler, Aaron R, Fobel, Ryan, Fobel, Christian
Format Patent
LanguageEnglish
Published 30.03.2021
Subjects
CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PHYSICS
TESTING
TRANSPORTING
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Summary: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.
Bibliography:Application Number: US201716325309