BiVO4 KPFM cannabis temp P3HT piezoelectric force microscopy Polytetrafluoroethylene Device Thermoplastic_polyurethane domain_switching silicon_carbide frequency_modulation HiVacuum Conducting Composition CuSubstrate IMT_Bucharest SKKU Water IIT-chennai Temperature Blend Hexylthiophene HexagonalBN AIN OpticalWaveguide HexagonalBoronNitride BlockCopolymer Dimethicone Polyaniline Indium_tin_oxide Gong Protein AM_SKPM self-assembled_monolayer