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The effect of nitrogen addition to Ar/CH4 gas mixture on microstructural characterization of nanocrystalline diamond

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Published/Copyright: December 11, 2013
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 34 Issue 3

Abstract

In the present study, nanocrystalline diamond (NCD) nanowire films were synthesized on silicon substrates, using microwave plasma-enhanced chemical vapor deposition (PECVD) with a CH4/Ar/N2 gas mixture at moderate temperatures. The influence of nitrogen concentration on the formation of NCD was investigated. The characteristics of NCD films were evaluated using scanning electron microscopy (SEM), Raman spectroscopy, optical emission spectroscopy (OES), and a contact angle meter. NCD nanowire films with 300–500 nm length were grown with the incorporation of nitrogen. Heterostructures of sp3-bonded diamond nanowires and sp2-bonded graphite were synthesized by adding small amounts of nitrogen to the CH4/Ar gas mixture. Surface roughness became smooth and the grain size decreased as the nitrogen was introduced into the CH4/Ar gas mixture. With the increase of nitrogen concentration, the sp2/sp3 ratio of carbon bonds increased. The wettability of the NCD nanowire films was sensitive to the bonding structure. The hydrophobic and non-reactive properties of NCD nanowire films make them highly applicable for biomedical implants.

Keywords: contact angle; microwave plasma-enhanced chemical vapor deposition; nanocrystalline diamond; nitrogen
Corresponding author: Pei-Wen Peng, School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan, e-mail: ; and Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan
aThese authors contributed equally to this article.

Acknowledgments

The authors highly appreciate Mr. Wei-Hung Chang for his participation in experiments. The authors also acknowledge financial support of the research by the project of Taipei Medical University-Taipei Medical University Hospital, under the grant number of 100TMU-TMUH-08.

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Received: 2013-9-6
Accepted: 2013-11-18
Published Online: 2013-12-11
Published in Print: 2014-5-1

©2014 by Walter de Gruyter Berlin/Boston

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  2. Editorial
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  5. The effects of funoran-containing xylitol chewing gum on dental plaque
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https://doi.org/10.1515/polyeng-2013-0219
Keywords for this article
contact angle; microwave plasma-enhanced chemical vapor deposition; nanocrystalline diamond; nitrogen

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Biomaterials for dental technologies
  4. Original articles
  5. The effects of funoran-containing xylitol chewing gum on dental plaque
  6. Analysis on surface modification of orthodontic power chain by nanoimprinting process
  7. The investigation of gutta-percha temperature and compaction force change when using the vertical compaction of warm gutta-percha technique
  8. Histological evaluation of socket preservation with different bone grafting materials
  9. Fabrication and magnetic testing of a poly-L-lactide biocomposite incorporating magnetite nanoparticles
  10. A novel porcine collagen GTR membrane for treatment of Class II molar furcation involvement
  11. Development and biocompatibility tests of electrospun poly-l-lactide nanofibrous membranes incorporating oleic acid-coated Fe3O4
  12. Research of biocompatibility on bioactive films fabricated using oxygen plasma immersion ion implantation
  13. The effect of nitrogen addition to Ar/CH4 gas mixture on microstructural characterization of nanocrystalline diamond
  14. Single-molecule manipulation and detection platform for studying cancer cell chemotaxis
  15. Contrast enhancement of iohexol-cisplatin-gelatin complex under computed tomography imaging
  16. Real-time sensing of hepatitis B virus X gene using an ultrasensitive nanowire field effect transistor
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