OpticalElement Phosphide Piezo ForceVolumeImage Oxidation LiIonBattery SPMLabs Regensburg HexagonalBN ContactModeDot ScanningTunnelingMicroscopy CuSubstrate Kevlar Jason mechanical property LowDensityPolyethylene PolyimideFilm HighAspect Neodymium strontiu_titanate H-BN Bio ForceMapping PrCurve Self-assembledMonolayer AtomicLayer Al2O3 Workfunction DLaTGS Graphene SFAs Chungnam_National_University CVD 3-hexylthiophene BTO