SKKU suspended_graphene Kevlar PhaseImaging Protein I-VSpectroscopy Polymer StyreneBeads Steps FailureAnalysis Ram Heat Strontium Boron Polystyrene TyphimuriumBiofilm Cell non_contact CalciumHydroxide Vinylpyridine LateralPFM PolyvinylAcetate MLCC TemperatureControlledAFM PhaseTransition NusEce AAO PetruPoni_Institute Magnetic Force Microscopy SrO Piranha FuelCell Lift molecule PpLdpe