PolyvinylAcetate high_resolution PtfeFilter AlkaneFilm 2dMaterials SoftSample HOPG Resistance SFAs Polymer Boron PetruPoni ForceVolumeImage FastScan Anneal hydrocarbon domain_switching Metal-organicComplex MultiferroicMaterials Microchannel Vac frequency_modulation MLCC Gallium Transparent LDPE BismuthFerrite ScanningSpreadingResistanceMicroscopy EvatecAG YttriaStabilizedZirconia Protein Conducting Chungnam_National_University polyvinyl acetate FM-KPFM