VerticalPFM atomic_layer non_contact Sperm Heating Potential LateralForce Praseodymium PtfeFilter TappingMode Polyimide PetruPoni LiftHeight Chromium Oxide Fe_film MonoLayer Blood Foil high_resolution Indium_tin_oxide Barium_titanate Grain ItoGlass Pyroelectric GlassTemperature Cross-section aluminum_nitride Nanofiber SmallScan NUS_Physics self_healing PECurve ScanningIon-ConductanceMicroscopy Magnetic Force Microscopy