Patent ID: 8496889
Filing Date: 2013-07-30
Classification: B01L,G01N,Y10T

Abstract:
1. A microfluidic device for separating an emulsion, comprising: a baseplate layer; a flow layer attached to the baseplate layer; a control layer attached to the flow layer, such that the baseplate layer, the flow layer, and the control layer form the microfluidic device; a first section and a second section; a microfluidic channel within the flow layer, the microfluidic channel passing through the first section and the second section, and configured to flow the emulsion therein; a first filter located within the first section, the first filter comprising a plurality of obstructions, each obstruction having a predetermined size, and each obstruction separated from a neighboring obstruction by a predetermined separation distance, thereby obstructing particles in the emulsion that cannot fit through spaces in the plurality of obstructions, the obstructed particles comprising undesired particles; and a second filter located within the second section, the second filter configured to sort desired particles that pass through the first filter, and send each desired particle into a predetermined channel, wherein the first section further includes a plurality of purge inlets and a plurality of purge outlets adjacent the first filter, configured to remove the undesired particles as a consequence of the first filter.