NusEce Hole Composition F14H20 FFM CP-AFM Polyvinylidene HydroGel organic_polymer Composite Chemical Vapor Deposition Foil Austenite ScanningKelvinProbeMicroscopy DNAProtein FAPbI3 NUS_NNI_Nanocore Boron Water BiasMode CuFoil fluoroaalkane Vacuum FailureAnlaysis BismuthFerrite YszSubstrate SicMosfet PvdfBead molecular_self_assembly piezoelectric force microscopy PECurve ElectrostaticForceMicroscopy mono_layer FM_SKPM atomic_layer