Phthalocyanine frequency_modulation Iron HardDisk Sapphire Pvdf high_resolution SelfAssembly PhaseTransition semifluorinated_alkanes Chungnam_National_University pinpoint mode dielectric_trench molecular_self_assembly ScratchMode Praseodymium TungstenThinFilmDeposition temperature controller AFM nanobar hard_disk Techcomp Boron ShenYang Varistor ScanningIon-ConductanceMicroscopy Growth LiftMode Patterns Butterfly MembraneFilter CP-AFM epitaxy Yttria_stabilized_Zirconia LightEmission Nanotechnology