SurfaceOxidation STM GaN rubber Sic Molybdenum Domain HydroGel LateralForce Metal vertical_PFM Device AAO PpLdpe fluoroalkane bias_mode Switching Aggregated_molecules Mosfet Sidewall KPFM Polydimethylsiloxane Collagen Gong Pyroelectric LiquidImaging Cross-section TungstenThinFilmDeposition Reading temp_control Terrace Hexatriacontane Current atomic_steps Global_Comm