HiVacuum Gong HanyangUniv PolyvinylAcetate ScanningTunnelingMicroscopy semifluorinated alkane PhthalocyaninePraseodymium silicon_oxide ScanningIon-ConductanceMicroscopy OxideLayer sputter StrontiuTitanate Subhajjit AIN Moire PolyimideFilm ForceMapping Transparent atomic_steps light_emitting Steps Polarization StyreneBeads Melt Thermal Carbon Bacteria InsulatorFilm Forevision Solution PUR Adhesive Piezo NCM\ kelvin probe force microscopy