PvdfFilm SiliconeOxide ForceDistanceSpectroscopy Flake Foil ULCA Bacteria SrTiO3 Optoelectronic SKPM ImideMonomer Calcite LiquidCell PolyvinylideneFluoride Conduct VortexCore Polyimide Phosphide Composition Polyethylene piezoelectric force microscopy FM_KPFM fluoroaalkane Holes temp RedBloodCell CeramicCapacitor IVSpectroscopy Polyurethane Inorganic ForceVolumeMapping LFM silicon_carbide University_of_Regensburg fifber