Sulfur FloppyDisk Zagreb Zhi semifluorinated_alkane fifber domain_switching mono_layer LiNbO3 ULCA Pvdf Piezoresponse food AdhesionEnergy PDMS mechanical property Display MfmPhase DiffractiveOpticalElements Organic kelvin probe force microscopy Foil thermal_property FM_SKPM cannabinoid Vac DIWafer cannabis Chungnam_National_University bias_mode KPFM Sio2 Hafnium_dioxide H-BN SKKU