phase_change IcelandSpar AM-KPFM ferromagnetic epitaxy Perovskite CntFilm Butterfly FrequencyModulation HACrystal Led nanobar fe_nd_b PvdfBead SKPM Grain KPFM Sperm NeodymiumMagnets TemperatureControl TemperatureControllerStage Magnets Tapping layers DentalProsthesis ScanningIon-ConductanceMicroscopy CompactDisk contact Ferroelectric non_contact EPFL dichalcogenide Floppy Boron SICM