NtuEee NTU PhaseChange Singapore BiasMode nanomechanical Composition SoftSample PVAP3HT SolarCell TriGlycineSulphate LowDensityPolyethylene DentalProsthesis LiquidCrystal Molybdenum_disulfide biocompatible HardDisk Cross-section Conduct HafniumDioxide fluorocarbon Conductivity self-assembly Anneal Fujian Ni-FeAlloy Optical SiWafer Scanning_Thermal_Microscopy MagneticArray FrictionalForceMicroscopy LateralPFM PFM doped SAM