Nanostructure diamond (NSD) film with a hardness as high as 70 GPa and an average surface roughness of 10 nm has been synthesized by the two-step negative substrate bias method combined with postgrowth Ar-H2 plasma irradiation. The Ar-H2 plasma irradiation has been confirmed to improve the uniformity of grain size and shape and increase the hardness of the NSD film.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics