HexagonalBN F14H20 Cross-section Varistor Change Laser Mfm NUS_Physics Polyimide CVD Optoelectonics HDD Sio2 Ptfe HBN LateralPFM Tin sulfide CastIron GaN Bismuth Mechanical&nanotechnology Topography TPU TappingMode Ram AmplitudeModulation ElectrostaticForceMicroscopy Treatment WWafer CntFilm UnivMaryland Pipette Inorganic_Compound GlassTemp Sphere