Patent ID: 8877320

Claim:
A microfluidic device, comprising: a substrate comprising a microfluidic channel; and an electrically conductive feature comprising an electrically conductive layer arranged on a primer layer and positioned with reference to the microfluidic channel, wherein the primer layer comprises: (i) an organic polymer selected from the group consisting of (a) a homopolymer or copolymer comprising a vinyl lactam repeating unit, (b) a cellulose ether, (c) polyvinyl alcohol, and (d) unmodified or modified gelatin, and (ii) a porous particulate material, wherein the porous particulate material is dispersed in the organic polymer, and wherein the microfluidic channel comprises a side wall portion that joins an upper surface of the substrate at a rim and a lateral separation δ exists between the rim of the microfluidic channel and the edge of the electrically conductive layer.