StainlessSteel phase_change NUS_Physics StyreneBeads Co/Cr/Pt NUS exfoliate Ferroelectric NtuEee non_contact Calcium bias_mode LithiumNiobate self_healing LightEmiting GalliumPhosphide Lift Reduction Growing Logo Sapphire FAFailureAnlaysis MagneticForceMicroscopy Conductance MBE PolymerPatterns ContactMode Electrical&Electronics Nanostructure SoftSample BaTiO3 Wafer HexagonalBN Piranha Step