TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first coating further comprises an electrically conductive material. The electrically conductive material comprises at least one of gold, silver, ruthenium, rhodium, palladium, rhenium, osmium, iridium, platinum, rare earth metals and/or their alloys, polymeric carbon or graphite. The carbon chain is linear, branched or cyclic. The compound (A) comprises at least one Si-O group and Si-R group, where R includes optionally saturated carbon chain, and the molar ratio of Si-R groups to Si-O groups is 1/8-1/2. The first coating further comprises polar groups to improve the hydrophilicity of the coating. The siloxane has the structure of formula (RRSiO). The siloxane comprises hexamethyl siloxane. The second gas comprises oxygen. The precursor gases comprise a material having siloxane structure of formula (R2-SiR1R3-O-SiR4R6-R5). The nanoparticle has a nodular shape. The coating is sufficient porous to allow fibers of a diffusion media to extent through it. The coating includes nanopaticles having a size of 1-100 nanometers. The product further comprises a second coating comprising an electrically conductive material, where the second coating overlies the substrate and the first coating overlies the second coating.R = alkyl or optionally saturated carbon chain; andR1-R6 = H, O, Cl, or optionally saturated carbon chain.Preferred Process: The process further comprises treating the coating to add polar groups to the compound. The treating step comprises exposing the coating to a plasma comprising oxygen.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The component comprises a bipolar plate. The substrate comprises a metal. The substrate comprises a polymeric composite material. The component comprises a bipolar plate and further comprises a diffusion media overlying the coating, where the diffusion media comprises fibers and the coating is porous; and the fibers extend though the coating. The fuel cell component is a bipolar plate having an anode side and a cathode side, where the coating is over the anode side and the cathode side, and the mean thickness of the anode side is at least 15 percent than the mean thickness of the coating on the cathode side.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The polar group comprises a hydroxyl, halide, carboxyl, ketonic or aldehyde function group. The carbon chain has 1-4C.