Microstructured micropillar arrays for controllable filling of a capillary pump
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United States of America Patent
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Nov 3, 2015
Grant Date -
Jul 16, 2015
app pub date -
Jan 15, 2015
filing date -
Jan 15, 2014
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Abstract
The embodiments of the present disclosure relate to a micro-fluidic device comprising a substrate, a cavity in the substrate and a plurality of micro-pillar columns located inside the cavity. The micro-pillars columns are configured to create a capillary action when a fluid sample is provided in the cavity. A micro-fluidic channel is present between two 5 walls of any two adjacent micro-pillars in a same micro-pillar column. Each of the two walls comprises a sharp corner along the direction of a propagation path of the fluid sample in the micro-fluidic channel thereby forming a capillary stop valve. A notch provided in a sidewall of the cavity acts as a capillary stop valve.
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