TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The drying agent is barium oxide, phosphorus pentoxide or calcium hydride.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The impedance organic binder, diamine crosslinker and polypyrrole powder are at 5-20 wt.%, organic sulfonate salt is at 0.5-5 wt.% and balance is the polar solvent. The impedance organic binder is cellulose acetate, ethyl cellulose, cellulose, bisphenol A propoxylate diglycidyl ether, methyl methacrylate-glycidyl methacrylate-tetrahydrofurfuryl acrylate copolymer, or glycidyl methacrylate-tetrahydrofurfuryl acrylate copolymer. The diamine crosslinker is meta-xylylenediamine, para-xylylenediamine, para-phenylenediamine, 1,3-diaminopropane or 1,4-diaminobutane. The organic sulfonate salt is para-toluene sulfonate, dodecyl benzene sulfonate, camphor sulfonate or Nafion (RTM: Sulfonated tetrafluoroethylene based fluoropolymer-copolymer). The polar solvent is methanol, ethanol, propanol, isopropanol, trifluoroethanol, 2-methoxyethanol, diethylether, tetrahydrofuran, acetonitrile, dimethylsulfoxide, dimethyl formamide, propylene carbonate or water. EXAMPLE - Bisphenol A propoxylate diglycidyl ether (100 mg) was transferred into a vial and freshly distilled meta-xylylene diamine crosslinker (50 mu l) was added into the resin, and the mixture diluted with methanol-deionized water (50/50 by volume) mixture to give 20% solution of the polymer. The vial was tightly capped and the mixture shaken vigorously to inspect readiness to form homogenous cocktail. The mixture was further sonicated for additional 30 minutes. Doped polypyrrole fine black powder (300 mg) and sodium para-toluene sulfonate (50 mg) were added into a glass vial containing 50/50 by volume mixture of methanol-deionized water (2 ml). The vial was tightly capped and vigorously shaken to check the readiness of dissolution and the mixture sonicated for one hour. The contents of the two vials containing bisphenol-diamine solution and polypyrrole-salt solution were combined and the final mixture was sonicated for additional 2 hours until homogenous solution was produced. The solvent cast polypyrrole solution was stored at 4 degrees C before use. The solvent cast polypyrrole solution (5 mu l) was drop coated onto-screen printed carbon electrode and the solvent evaporated under nitrogen atmosphere for 1 hour.