PatternedSapphireSubstrat Polyethylene Mechinical amplitude_modulation Transparent VerticalPFM Hexatriacontane ForceVolumeImage Monisha HighAspect LogAmplifier Copolymer LithiumNiobate Tapping MESA structure ReflexLens Polystyrene small_scan Silver Electronics NUSNNI MeltingPoint Vac Conductivity Non-ContactMode Piranha KelvinProbeForceMicroscopy Array LiquidCrystal Annealed exfoliate SThM Christmas Optoelectonics SingleCrystal