Patent ID: 6935772

Claim:
A microfluidic device comprising: a plurality of stacked, substantially planar sheets of material including a first stencil sheet, a second stencil sheet, a spacer sheet disposed between the first stencil sheet and the second stencil sheet, an upper cover sheet, and a lower cover sheet, each sheet having an upper surface, an opposing lower surface, at least one edge, and a thickness, wherein each sheet of the plurality of sheets is joined to at least one other adjacent sheet such that the plane of the joint is substantially parallel to the upper and lower surfaces of each sheet; a first microfluidic inlet channel for supplying a first fluid, the first inlet channel being defined through the entire thickness of the first stencil sheet; a second microfluidic inlet channel for supplying a second fluid, the second inlet channel being defined through the entire thickness of the second stencil sheet; and a microfluidic outlet channel disposed downstream of the first inlet channel and the second inlet channel, the outlet channel having a width; wherein the spacer sheet defines an aperture having a width greater than the width of the outlet channel; and wherein at least a portion of the first inlet channel overlaps at least a portion of the second inlet channel at the aperture, thus permitting fluid communication between the first inlet channel, the second inlet channel, and the outlet channel.