Surface Properties of Differently Prepared Ultrananocrystalline Diamond Surfaces

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.

KULISCH Wilhelm;  POPOV Cyril;  GILLILAND Douglas;  CECCONE Giacomo;  SIRGHI Lucel;  RUIZ Ana;  ROSSI Francois; 

2010-06-01

ELSEVIER SCIENCE SA

JRC54325

0925-9635,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC54325,   

10.1016/j.diamond.2009.01.005,