ElectrostaticForceMicroscopy BFO MBE TemperatureControlledAFM Barium_titanate Transparent PUR Ram AAO Thermal CVD pinpoint mode Ceramics HighResolution Materials SicMosfet DOE Gold Steps multi_layer optoelectronics DNAProtein lift_mode FrictionForce Regensburg FrictionalForce AmplitudeModulation electrospinning Memory mechanical_property ForceMapping Piezo KPFM dichalcogenide Etch