Abstract
We examined the effect of surface modification to reduce friction. Silane-coupling treatment is powerful tool for surface modification. Silane-coupling treatment was influenced by oxidation state of material. We examined surface modification effect on Au, Cu, CuO, and SiO_2 substrates using silanes. To confirm of silane-coupling treatment, we used X-ray photoelectron spectroscopy and contact angle measurement. We evaluated friction by atomic force microscope. We observed that the long side chain of silane was more effective than the short side chain to reduce friction, we can get more hydrophobic substrate by using a base metal having higher oxidation degree.
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