Defect NUS ContactMode alkanes ReflexLens Ni-FeAlloy BlockCopolymer TyphimuriumBiofilm Yeditepe Pinpoint PFM Scratch Conductivity AEAPDES tip_bias_mode Non-ContactMode ImideMonomer Melt Reduction Lattice KAIST NanoLithography temperature controller AFM layers KevlarFiber Defects Inorganic Ananth Filter SingleLayer food Polyvinylidene_fluoride Topography Potential Tin disulfide LightEmission