Polymer ConductingPolymer Christmas Laser Vac AM-KPFM gallium_nitride IcelandSpar Chrome Writing PUR Molybdenum_disulfide Graphene STM TungstenDeposition Chromium SiWafer pulsed_laser_deposition BTO Protein LateralPFM SAM Implant Sphere Scanning_Thermal_Microscopy Polyvinylidene_fluoride PolyStylene HanyangUniv LithiumNiobate Calcium MonoLayer mechanical property Leakage KelvinProbeForceMicroscopy molecular_beam