TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The reducing agent includes silver. It includes material(s) consisting of silver, metallic silver, silver oxide, silver chloride, silver bromide, silver iodide, silver fluoride, silver/silver oxide, silver/silver halide, silver/silver chloride, silver/silver bromide, silver/silver iodide, silver/silver fluoride, copper, copper oxide, copper/copper halide, copper/ copper oxide, gold, platinum, carbon, or conductive carbon. The oxidizing agent includes zinc. It includes material(s) consisting of zinc, magnesium, aluminum, iron, calcium, tin, copper, or their alloys. The first reservoirs include a first pattern of reservoirs, and the second reservoirs include a second pattern of reservoirs interleaved with the first pattern of reservoirs. The reducing agent and oxidizing agent produce redox reactions between the first and second reservoir surfaces, in the presence of an electrically conductive material contacting the second and first reservoir surfaces.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The reducing agent includes silver. It includes material(s) consisting of silver, metallic silver, silver oxide, silver chloride, silver bromide, silver iodide, silver fluoride, silver/silver oxide, silver/silver halide, silver/silver chloride, silver/silver bromide, silver/silver iodide, silver/silver fluoride, copper, copper oxide, copper/copper halide, copper/ copper oxide, gold, platinum, carbon, or conductive carbon. The oxidizing agent includes zinc. It includes material(s) consisting of zinc, magnesium, aluminum, iron, calcium, tin, copper, or their alloys. The first reservoirs include a first pattern of reservoirs, and the second reservoirs include a second pattern of reservoirs interleaved with the first pattern of reservoirs. The reducing agent and oxidizing agent produce redox reactions between the first and second reservoir surfaces, in the presence of an electrically conductive material contacting the second and first reservoir surfaces.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The substrate includes material(s) consisting of poly-tetra-fluoroethylene, silicone, hydrogels, other gels, elastomeric materials, synthetic sponges, natural sponges, silks, keratins, cellulosic fibers, rayon, acetates, acrylics, cellulose esters, modacrylics, polymers, super-absorbent polymers, polyamides, polyesters, polyolefins, polyvinyl alcohols, electroglas, polymethyl methacrylate, rigid gas permeable materials, soft silicone hydrogel materials, hyper-oxygen transmissible materials, coated metals or alloys, plastics, polyethylene, ceramics, polyurethane foam, cotton, or rayon. It includes bioabsorbable material(s) consisting of glass, sugar glass, salt glass, bioceramics, natural biodegradable polymers, synthetic biodegradable polymers, alumina, zirconia, calcium phosphate, silica-based glasses, glass ceramics, pyrolytic carbons, tetracalcium phosphate, amorphous calcium phosphate, alpha-tricalcium phosphate, beta-tricalcium phosphate, hydroxyapatite, polymers, co-polymers, esters, polyesters, polyether-esters, caprolactone, anhydrides, orthoesters, amides, polydioxanone, glycolide, lactide, trimethylene carbonate, polyhydroxybutyrate, polyhydroxyvalerate, poly(amino acids), or polyesteramides.