Wonseok SKKU HydroGel CuSubstrate Leakage StrontiuTitanate SingleLayer PvdfFilm Microchannel Adhesive SrTiO3 AnodizedAluminumOxide Heat Polyethylene HighAcpectRatio MolybdenumDisulfide Reduction Cobalt TappingMode DomainSwitching SmalScan temp_control heterojunctions Pzt Step ULCA MetalCompound MeltingPoint TCS contact Edwin Polystyrene semifluorinated alkane Phase ThermalDetectors