EFM Heat PDMS BiVO4 Worcester_Polytechnic_Institute small_scan Topography mfm_amplitude SicMosfet ElectrostaticForceMicroscopy MBE SAM Fe_film align Logo Ferrite KevlarFiber Beads Pyroelectric ContactMode molecular_beam CeramicCapacitor Chemical Vapor Deposition India SPMLabs molecular_self_assembly GaP Solar SiliconCrystal PUR Aluminum Photovoltaics Nanofiber bias_mode Molybdenum_disulfide