Filter dielectric_trench Regensburg AM-KPFM Ni81Fe19 FFM Patterns LMF Water Glass Vacuum DIWafer SoftSample LightEmission Scanning_Thermal_Microscopy Polyimide DeoxyribonucleicAcid DomainSwitching PECurve food pulsed_laser_deposition light_emission Polystyrene LiquidImaging DeflectionOptics Bio YszSubstrate Tapping WPlug Heating silicon_oxide Sapphire rubber Non-ContactMode FM-KPFM