Towards surface aging of nanocrystalline diamond and diamond-like carbon films in open air

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00487035" target="_blank" >RIV/68378271:_____/17:00487035 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Towards surface aging of nanocrystalline diamond and diamond-like carbon films in open air

Original language description

Carbon-based materials such as nanocrystalline diamond (NCD) and diamond-like carbon (DLC) films are rather suitable for biomedical applications which require prolonged surfaces stability towards aging in the open air.nThis work focuses on aging of surface terminated NCD and DLC films studied by XPS, WCA and SEM. The initial surface terminations were done by RF plasma in appropriate gas mixtures.The XPS and WCA measurements of O-NCD and O-DLC films showed increase of oxygen content (up to 8at.%) when WCA was <10°. The hydrogen termination caused decline of oxygen (~3at.%) and increase of WCA (>70°) for both materials. Aged H-NCD and H-DLC films showed constant oxygen concentration (~4at.%) whereas oxidized samples had degraded. The XPS revealed two times higher amount of nitrogen on DLC films rather than on diamond. Although nitrogen content of both aged samples is sufficient for further bioapplications.

Czech name

—

Czech description

—

Type

O - Miscellaneous

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA15-01687S" target="_blank" >GA15-01687S: Allotropes of carbon: microbiological studies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů