FrictionalForceMicroscopy Sapphire HighAspect Chungnam_National_University MESA structure PinpointNanomechanicalMode Ananth DLaTGS Piezoelectric SKKU LiBattery pulsed_laser_deposition Pzt Patterns fluorocarbon ConductiveAFM GlassTemp Leakage Multiferroic_materials Thermoplastic_polyurethane Copolymer self-assembly UTEM Gong Array domain_switching SicMosfet nanobar CrAu Phenanthrene aluminum_nitride biocompatible PrCurve DomainSwitching plastic