Microstructural and biological properties of nanocrystalline diamond coatings

R. J. Narayan, W. Wei, C. Jin, M. Andara, A. Agarwal, R. A. Gerhardt, Chun Che Shih, Chun Ming Shih, Shing Jong Lin, Yea Yang Su, R. Ramamurti, R. N. Singh

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


In this study, the microstructural, mechanical, adhesion, and hemocompatibility properties of nanocrystalline diamond coatings were examined. Microwave plasma chemical vapor deposition (MPCVD) was used to deposit nanocrystalline diamond coatings on silicon (100) substrates. The coating surface consisted of faceted nodules, which exhibited a relatively wide size distribution and an average size of 60 nm. High-resolution transmission electron microscopy demonstrated that these crystals were made up of 2-4 nm rectangular crystallites. Raman spectroscopy and electron diffraction revealed that the coating contained both crystalline and amorphous phases. The microscratch adhesion study demonstrated good adhesion between the coating and the underlying substrate. Scanning electron microscopy and energy dispersive X-ray analysis revealed no crystal, fibrin, protein, or platelet aggregation on the surface of the platelet rich plasma-exposed nanocrystalline diamond coating. This study suggests that nanocrystalline diamond is a promising coating for use in cardiovascular medical devices.

Original languageEnglish
Pages (from-to)1935-1940
Number of pages6
JournalDiamond and Related Materials
Issue number11-12 SPEC. ISS.
Publication statusPublished - Nov 2006


  • Chemical vapor deposition
  • Diamond
  • Hemocompatibility
  • Medical implants
  • Nanocrystalline

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • General Physics and Astronomy


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