phase_change MoS2 Polydimethylsiloxane FM-KPFM Nanopattern Pinpoint Polyethylene Alloy single_layer Steps ElectroChemical LateralPFM Trench PolyvinylAcetate molecule Polyimide Cobalt non_contact BlockCopolymer Lateral Varistor ScanningThermalMicroscopy SrO Device FrictionForce PinpointNanomechanicalMode Formamidinium_lead_iodide Mechanical&nanotechnology BoronNitride STM small_scan Jason PpLdpe Styrene Chrome