Patent ID: 8486615

Claim:
A method comprising: (1) applying a photopatternable semi-permeable silicone resin composition to a surface in a sensing device to form a film, wherein the sensing device comprises a silicon wafer having a silicon dioxide layer on its surface, (2) photopatterning the film by a process comprising exposing the film to radiation through a photomask without using a photoresist to produce an exposed film; (3) removing regions of the non-exposed film with a developing solvent to form a patterned semi-permeable film; and (4) heating the patterned film, wherein the photopatternable semi-permeable silicone resin composition comprises: (a) a curable silicone resin and (b) a photoinitiator, wherein the curable silicone resin is selected from an acrylic functional silicone resin of the formula {[(CH 2 ═CR 13 COOR 14 )SiO 3/2 ] h [R 15 SiO 3/2 ] i } j , where each R 13 is independently a hydrogen atom or methyl group, each R 14 is independently a hydrocarbylene group having 1 to 8 carbon atoms, each R 15 is independently an alkyl, cyclic alkyl, aryl or alkenyl group having 1 to 8 carbon atoms, wherein h satisfies the inequality 0.05<h<0.95, wherein i satisfies the inequality 0.05<i<0.95, h+i=1, and j is a value sufficient to give the acrylic functional silicone resin a weight average molecular weight (Mw) of 3,000 to 100,000 grams per mole in terms of polystyrene by gel permeation chromatography, a vinyl ether functional silicone resin, an epoxy functional silicone resin, or a combination thereof.