non_contact Crystal nanomechanical Formamidinium_lead_iodide HighAcpectRatio AIN polyvinyl acetate BaTiO3 Wildtype gallium_nitride self-assembly Switching Liquid CeNSE_IISc FuelCell HfO2 Gong molecular_self_assembly tip_bias_mode PpLdpe HighResolution Pzt piezoelectric force microscopy AdhesionEnergy Fe_film IndiumTinOxide high_resolution Glass pulsed_laser_deposition LowDensityPolyethylene PhaseChange Growth HardDisk Hexacontane ShenYang