Patent ID: 8354075
Filing Date: 2013-01-15
Classification: B01L,Y10T

Abstract:
1. A microfluidic device, said device comprising: a substrate; a main microchannel having one inlet and an outlet, said main microchannel is disposed on said substrate; a plurality of side microchannels, said plurality of side microchannels having a predetermined length, wherein each of said plurality of side microchannels is connected to the main microchannel to form a downstream stagnation point projected into the main microchannel and an upstream edge located at the junction formed between the main microchannel and each of said plurality of side microchannels, wherein said stagnation point has a predetermined geometric design and a predetermined distance (Δλ) of up to 100 μm from the upstream edge; and wherein said main microchannel is in fluid communication with each of said side microchannels; wherein said side microchannels are divided into a plurality of groups, wherein each group consists of at least two side microchannels; wherein the predetermined distance of the stagnation points for each group of side microchannels is greater than the predetermined distance of the stagnation points for the immediately preceding group of side microchannels; and wherein the width of the main microchannel remains constant as the predetermined distance increases for each group of side microchannels.