I-VSpectroscopy TyphimuriumBiofilm OxideLayer CaMnO3 Ferroelectric gallium_nitride TungstenDeposition Litho light_emission GlassTemp HBN ScanningIon-ConductanceMicroscopy Solar Chemical_Vapor_Deposition CNT ScratchMode Heating Hexacontane Reading HydroGel GaN BoronNitride NUS_Physics China Boron Zhi LiftHeight vertical_PFM C60H122 Bismuth Conduct Tungsten Vacuum mono_layer mechanical property