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|Title:||Surface Properties of Differently Prepared Ultrananocrystalline Diamond Surfaces|
|Authors:||KULISCH Wilhelm; POPOV Cyril; GILLILAND Douglas; CECCONE Giacomo; SIRGHI Lucel; RUIZ Ana; ROSSI Francois|
|Citation:||DIAMOND AND RELATED MATERIALS vol. 18 no. 5-8 p. 745-749|
|Publisher:||ELSEVIER SCIENCE SA|
|Type:||Articles in periodicals and books|
|Abstract:||Ultrananocrystalline diamond/amorphous carbon composite films have been deposited by microwave plasma chemical vapour deposition from 17% CH4/N2 mixtures at 600 °C. Thereafter the films were subjected to various treatments (plasma processes, UV/O3 exposure) to obtain hydrogen, oxygen, and fluorine terminated surfaces, which then have been characterized with respect to their composition, roughness, wettability, and other properties. Among others, it will be shown that H- and F-terminated surfaces are very stable even if exposed for long time to air, while O-terminated ones are prone to contaminations. H- and Otermination can be patterned by applying the UV/O3 treatment through a mask. Finally, it will be shown that a non-fouling poly(ethylene glycol) layer can be grafted directly on oxygen terminated surfaces by an atom transfer radical polymerization process using a-bromoisobutyryl bromide as an initiator.|
|JRC Institute:||Institute for Health and Consumer Protection|
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