Patent ID: 7935565

Claim:
A method for forming an electronic device having a multilayer structure, comprising: embossing a surface of a substrate so as to depress first and second regions of the substrate relative to at least a third region of the substrate; treating the surface of the substrate with a surface modification process that has a different effect on depressed regions of the substrate relative to non-depressed regions of the substrate, whereby the non-depressed regions and the depressed regions are given different surface energies, such that the deposition of a material is defined by the surface energy of the substrate in the first and second regions depositing conductive or semiconductive material from solution onto the first and second regions of the substrate so as to form a first electrode on the first region and a second electrode on the second region, wherein the first and second electrodes are electrically insulated from each other by the third region; and wherein the third region is a ridge wherein the ridge has a width that defines a length of a channel of the electronic device.