suspended_graphene ThermalProperties LaAlO3 thermal_property StyreneBeads hetero_structure VerticalPFM Conduct Optical mono_layer Optoelectonics HiVacuum HBN dielectric_trench Cross-section fifber frequency_modulation ContactMode Celebration membrane DOE CalciumHydroxyapatite Fujian Magnetic Force Microscopy pinpoint mode high_resolution GaN Co/Cr/Pt Vortex Logo INSP KelvinProbeForceMicroscopy bias_mode MagneticPhase BreastCancerCell