Patent ID: 7419639
Filing Date: 2008-09-02
Classification: B01L,B81B,Y10T

Abstract:
1. A microfluidic device, comprising: a) a rigid substrate layer, wherein said rigid substrate layer has a first surface and a second surface; b) a patterned rigid layer having thickness t, wherein said patterned rigid layer has a first surface and a second surface, wherein said first surface of said patterned rigid layer is bonded to said second surface of said substrate layer, and wherein said patterned rigid layer contains an opening that extends from said first surface to said second surface of said patterned rigid layer; c) a patterned elastomeric layer having thickness greater than t, wherein said patterned elastomeric layer has a first surface and a second surface, wherein said first surface of said patterned elastomeric layer is bonded to said second surface of said patterned rigid layer, wherein said patterned elastomeric layer contains at least one opening that extends from said first surface to said second surface of said patterned elastomeric layer, and wherein said at least one opening in said patterned elastomeric layer and said opening in said patterned rigid layer are partially aligned; and d) a rigid support layer, wherein said rigid support layer has a first surface and a second surface, and wherein said first surface of said rigid support layer is bonded to said second surface of said patterned elastomeric layer, wherein said opening in said patterned rigid layer forms a microfluidic channel, wherein the walls of said microfluidic channel comprises at least three of said layers of said microfluidic device.