HighResolution Singapore PiezoelectricForceMicroscopy amplitude_modulation Nickel MechanicalProperties Lift Indium_tin_oxide Ni81Fe19 BiasMode GalliumPhosphide Wang PS_LDPE mechanical_property semifluorinated_alkanes hard_disk PetruPoni_Institute Cobalt MLCC kelvin probe force microscopy Phenanthrene graphene_hybrid StyreneBeads ReflexLens Liquid FM_KPFM rubber Kevlar pinpoint mode NUS_Physics Hysteresys atomic_steps AAO Lateral_Force_Microscopy Chemical_Vapor_Deposition