Ptfe UnivMaryland membrane NanoLithography Sidewall Magnetic Growing Styrene AM_KPFM Wonseok Chloroform HBN Multiferroic_materials cooling Morphology Polytetrafluoroethylene Thermal Oxide Leakage Tapping Silicon Water IISCBangalore FastScan Graphene LiIonBattery BiFeO3 Modulus TipBiasMode BiasMode Lanthanum_aluminate Galfenol PolymerBlend PhaseChange TemperatureControllerAFM