Crystal Perovskite fe_nd_b Polyvinylidene heterojunctions LeakageCurrent PinPointMode LaAlO3 Conductance NUSNNI Tape PS_PVAC Boundary Collagen BreastCancerCell AEAPDES FM_SKPM Croatia polyvinyl acetate Hexacontane kelvin probe force microscopy UTEM FFM Optoelectronic FM-KPFM OrganicSemiconductor CrystalGrowing Floppy optoelectronics PiezoelectricForceMicroscopy CrossSection Ni-FeAlloy Celebration Silver Calcite