Spain pulsed_laser_deposition Pinpoint PFM BaTiO3 Polydimethylsiloxane Indium_tin_oxide Indent Protein LateralForceMicroscopy medical self-assembled_monolayer LowDensityPolyethylene Carbon aluminum_nitride Piranha Varistor atomic_steps membrane C_AFM Materials Polymer Change SrTiO3 Workfunction Adhesion FrictionalForceMicroscopy NCM\ MonoLayer Vacuum Friction MembraneFilter FailureAnlaysis OrganicCompound HighAcpectRatio conductive