ContactModeDot Multiferroic_materials conductive Wang Semiconductor BismuthFerrite Piezoresponse Zhi SelfAssembly Sperm Hexacontane HydroGel LiftHeight kelvin probe force microscopy ReflexLens GlassTemp DataStorage mechanical property TungstenThinFilmDeposition 2d_materials Dental OpticalWaveguides China atomic_layer ScanningIon-ConductanceMicroscopy IISCBangalore Co/Cr/Pt Hafnium_dioxide BiFeO3 Global_Comm PUR UnivOfMaryland Polytetrafluoroethylene SRAM dichalcogenide