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Surface composition and hidrophobicity of coated and uncoted Ni samples. (a) XPS Ni 2p3/2 spectra of coated and uncoated Ni, including peak fitting to identify Ni (red, yellow and orange), NiO (green) and Ni(OH)2 (blue) contributions. This allows the identification of FLG control sample (NiT). Images of contact angle measurements using Milli-Q water in contact with (b) NiT; (c) FLG and (d) 4MLG.
