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In this study, we modified single-walled carbon nanotubes (SWCNTs) by CHF3 plasma generated by reactiveion etching (RIE) reactor. X-ray photo-electron spectroscopy (XPS) indicated fluorine atoms were attached to the side wall of CNTs. Static contact angle (CA) measurements indicated a very significant increase in the water contact angle from 65° for pristine CNTs to 170° for the doped SWCNTs.
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