Silver Worcester_Polytechnic_Institute Strontium CuSubstrate Adhesion CalciumHydroxyapatite GaAs FM-KPFM India Scanning_Thermal_Microscopy amplitude_modulation Terrace Fet Blood light_emission HanyangUniv Inorganic LFM ContactModeDots C60H122 MoS2 Gong frequency_modulation Singapore Neodymium ConductiveAFM SAM Reading FrictionalForce cannabidiol DomainSwitching Graphite PVAP3HT Wildtype fe_nd_b