VerticalPFM 2-vinylpyridine Hexatriacontane KPFM Butterfly temp_control cannabis Praseodymium LithiumNiobate Indent CrossSection MBE graphene_hybrid atomic_layer MfmAmplitude Gallium SrTiO3 blended polymers CopperFoil SurfaceOxidation alkanes light_emission Magnetic Force Microscopy StrontiumTitanate MagneticForceMicroscopy Chloroform Spincast heterojunctions DNA SoftSample layers PS_LDPE Battery hetero_structure Dopped