KPFM I-VSpectroscopy Grain Alkane Beads Electical&Electronics Fet LateralPFM Device HexagonalBoronNitride CrossSection Scratch AM_SKPM Mechanical KAIST TungstenThinFilmDeposition Polyvinylidene CeramicCapacitor GlassTemp PS_LDPE Floppy Chungnam_National_University IndiumTinOxide DomainSwitching Metal vertical_PFM FrictionForce Ferroelectric fifber Photovoltaics Calcite PFM FailureAnalysis domain_switching silicon_oxide