MfmAmplitude Reading ContactModeDot IMT_Bucharest Pyroelectric amplitude_modulation MeltingPoint SurfaceChange HumanHair LateralPFM fifber strontiu_titanate Filter Bio ElectroChemical Carbon nanobar Formamidinium_lead_iodide AM-KPFM Fet IcelandSpar ScanningSpreadingResistanceMicroscopy Mapping Polarization StyreneBeads Alkane InsulatorFilm ThermalConductivity FrequencyModulation high_resolution DIWafer Yeditepe_University atomic_steps temp_control University_of_Regensburg