Filter CrossSection Inorganic China self_healing FFM Tungsten_disulfide ThinFilm Pore Pattern NUSNNI Liquid sputter Sio2 ScanningKelvinProbeMicroscopy semifluorinated alkane OpticalElement Heating HOPG Collagen Scratch SSRM Defects Photovoltaics CNT Electical&Electronics SurfaceChange suspended_graphene OpticalWaveguides molecules DomainSwitching Inorganic_Compound Temasek_Lab TempControl Domain