amplitude_modulation Yeditepe_University PolymerBlend Mfm Gold BiasMode Holes Patterns LightEmiting pulsed_laser_deposition Display MESA structure 2dMaterials LeakageCurrent Hafnia Wang PANI Hysteresys Gong TemperatureControl MeltingPoint Monisha nanomechanical CuFoil SingleCrystal thermal_property KelvinProbeForceMicroscopy NCM\ MagneticForceMicroscopy OpticalModulator University_of_Regensburg BiFeO3 tip_bias_mode CaMnO3 ScanningKelvinProbeMicroscopy