Sapphire mfm_amplitude HafniumDioxide Subhajjit BCZT StyreneBeads MagneticForceMicroscopy FuelCell PolyvinylideneFluoride LiftHeight oxide_layer UnivOfMaryland India Liquid membrane Composite Scanning_Thermal_Microscopy Logo Dental Nanopattern Phenanthrene PhaseTransition Trench LiquidCell Collagen Tin disulfide mechanical_property KPFM #Materials Boron AtomicLayer UnivMaryland CVD Conduct Hafnia