Patent ID: 9034196
Filing Date: 2015-05-19
Classification: B01L

Abstract:
1. A microfluidic device for use with loose process material, the loose process material including first process material of a first size and second process material of a second size, the first size being different from the second size, the microfluidic device comprising: a substrate comprising a well plate and a channel plate; a flowpath including a well formed in the well plate in fluid communication with a channel formed on a surface of the channel plate, the channel including a bottom and sides extending from the bottom to the well plate; and a filter disposed across the flowpath, wherein the filter is a plurality of cross-channel dams formed into the channel plate, each of the plurality of cross-channel dams extending from the bottom completely across the channel between the sides, each of the plurality of cross-channel dams having a top and a height between the bottom of the channel and the top, the top of each of the cross-channel dams and the well plate defining a space adjacent the well plate for each of the plurality of cross-channel dams; wherein the plurality of cross-channel dams includes a first cross-channel dam and a second cross-channel dam; a height of the space-between the top of the first cross-channel dam and the well plate being so dimensioned to stop the first process material and not to stop the second process material; and a height of the space-between the top of the second cross-channel dam and the well plate being so dimensioned to stop the second process material.