PMNPT cooling HighAspect Phosphide FrictionalForce ImideMonomer HardDisk NUSNNI Cell Copper Ucl thermal_conductivity HanyangUniv LowDensityPolyethylene GalliumPhosphide EFMAmplitude flakes NUS MagneticForceMicroscopy PolymerBlend NUS_Physics Vacuum Ni-FeAlloy strontiu_titanate Kevlar Topography MLCC silicon_carbide Vac Croatia UnivOfMaryland NCM AAO self_healing pulsed_laser_deposition