Without of affect of sulfur in fuel, NOx in exhaust gas is decomposed completely using discharge and low temperature of 300 C. By roughening at least one smooth surface, the effective area of contact, and therefore surface adhesion energy, is reduced and hence the sticking force is reduced. The gold layer has a thickness dG where dG\u22660. Also disclosed herein is a support useful for stabilizing leads to transcutaneous or percutaneous devices.