PMNPT Water Lattice LateralPFM Pvdf Chungnam_National_University Epoxy Ferroelectric bias_mode CrystalGrowing ThinFilm 2d_materials LateralForceMicroscopy Alkane mono_layer RedBloodCell organic_polymer KPFM Ca10(PO4)6(OH)2 Zhi pinpoint mode MBE Foil #Materials PolyvinylAcetate PetruPoni_Institute cannabidiol CrAu Pyroelectric Monisha Co/Cr/Pt AM_KPFM CastIron STM Lateral