Dr.JurekSadowski Current Nickel self_healing C_AFM AtomicSteps kelvin probe force microscopy CalciumHydroxyapatite Organic StrontiumTitanate SRAM FrequencyModulation AM_KPFM HighAcpectRatio Polytetrafluoroethylene fluoroalkane PetruPoni DLaTGS #Materials GaAs Hafnium_dioxide Materials small_scan molecule Phenanthrene LDPE Pattern UnivMaryland molecular_beam Pzt Austenite Laser Yttria_stabilized_Zirconia Chrome ULCA