MagneticForceMicroscopy BiasMode ito_film multi_layer Mobile HexacontaneFilm chemical_compound solar_cell Defect non_contact EFM SrO IndiumTinOxide Temperature OpticalElement PolyvinylideneFluoride ForceMapping TemperatureControllerStage Lift HighAcpectRatio Au111 CntFilm Permalloy Al2O3 PolymerPatterns domain_switching Patterns Semiconductor Ferroelectric Optical LightEmiting Annealed ScanningTunnelingMicroscopy EPFL Polyvinylidene