mechanical property Change Workfunction Titanate Bismuth self_assembly ScanningIon-ConductanceMicroscopy Conductivity CopperFoil ForceVolume DomainSwitching Regensburg Dr.JurekSadowski temperature controller AFM Fluoride ElectroDeposition GlassTemp FrictionForce SelfAssembly VerticalPFM HanyangUniv FuelCell MembraneFilter Blood Hafnium_dioxide Conductance Lattice Hair oxide_layer HfO2 IVSpectroscopy NUSNNI self-assembled_monolayer PolyStylene TemperatureControlledAFM