heterojunctions Tapping SiliconCrystal self-assembled_monolayer HighAspect Hafnium_dioxide Conductivity Multiferroic_materials SingleCrystal DataStorage Vinylpyridine AEAPDES NCM bias_mode HACrystal Pinpoint ElectrostaticForceMicroscopy Plug Ferrite Pzt Patterns Temasek_Lab Conducting Conduct BariumTitanate Polystyrene Praseodymium TPU I-VSpectroscopy SKPM CrossSection InLiquid temperature_control molecules temp