NUSNNI Chungnam_National_University EFM Deposition Biology HardDiskMedia gallium_nitride bias_mode Hafnium_dioxide dielectric trench Crystal AtomicSteps CP-AFM BlockCopolymer Zagreb Spain PVA Lateral_Force_Microscopy light_emission Logo FrictionalForce biocompatible #Materials suspended_graphene AdhesionEnergy IndiumTinOxide Polyethylene Bismuth Step ItoGlass Metal NCM\ AtomicLayer 3-hexylthiophene SThM