piezoelectric force microscopy CVD Wang GaAs SAM Chrome Platinum Boundary AmplitudeModulation biocompatible Composition Phthalocyanine Granada Nickel Hexatriacontane SSRM suspended_graphene ScanningKelvinProbeMicroscopy SThM Grain LiftHeight TemperatureControllerAFM Melt AtomicLayer LightEmission vertical_PFM Bacterium PolyimideFilm Blood Edwin Mapping Wildtype Chloroform LiquidCrystal MESA structure