Roughness FuelCell pinpoint mode ScanningTunnelingMicroscopy ito_film temperature_control Ceramic Formamidinium_lead_iodide PvdfFilm cooling SurfaceChange ULCA PhaseChange FM_KPFM PiezoelectricForceMicroscopy LiftMode NusEce Piezoresponse Spain Tape Dimethicone fluoroaalkane Praseodymium Collagen HfO2 PpLdpe domain_switching Epoxy AlkaneFilm TPU Nickel Tungsten_disulfide Etch Cross-section light_emitting