Materials. The PEDOT:PSS (Clevios PH 1000, 1 wt%) aqueous dispersion was purchased from Heraeus. Waterborne polyurethane (PU) was provided by DSM (China). Poly(dimethylsiloxane) (PDMS, Sylgard 184, Dow Corning) prepolymer was prepared by mixing base silicone gel with a curing agent in a 10:1 weight ratio. Dimethyl sulfoxide (DMSO) was purchased from Aladdin Chemistry Co., Ltd., Shanghai, China....