BariumTitanate epitaxy small_scan SingleCrystal Lattice Polyurethane PVAP3HT Ito Ni81Fe19 Polytetrafluoroethylene FM_KPFM LogAmplifier Platinum Fujian Change piezoelectric force microscopy HumanHair Calcite CP-AFM Patterns thermal_property BismuthFerrite MfmAmplitude fluorocarbon domain_switching nanobar Device Epoxy STO Alkane single_layer LiBattery Perovskite Solar Subhajjit