MechanicalProperty Christmas GaAs Etch StyreneBeads Pinpoint Graphene BlockCopolymer HydroGel Hysteresys mechanical property Metal SingleLayer Nickel Ram LowDensityPolyethylene CeramicCapacitor CopperFoil Co/Cr/Pt Polyaniline Solar Ferrite BiasMode ferromagnetic ForceDistanceSpectroscopy molecule PS_LDPE medical LDPE Non-ContactMode KevlarFiber Lateral_Force_Microscopy F14H20 molecular_beam lithography