SICM food Strontium electrospinning ScanningTunnelingMicroscopy 2d_materials Hole gallium_nitride DeoxyribonucleicAcid Writing Temperature single_layer ScanningKelvinProbeMicroscopy Mapping GaAs SPMLabs Force-distance LiftMode Nickel Polystyrene IndiumTinOxide PECurve AM-KPFM Aluminum F14H20 Dimethicone Tin sulfide cooling Annealing bias_mode OpticalWaveguides atomic_layer Pyroelectric Sic mechanical_property