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<p>We demonstrate the self-sustained growth of nanocrystalline diamond (NCD) films using gas-phase plasma-nucleated nanodiamonds as seeds. These nanodiamonds were produced using a microwave microplasma (MWMP) torch and were directly collected on a silicon substrate placed downstream. The resulting carbon nanostructures consisted of agglomerated nanodiamond particles (&#xa0;10 nm in size), along with graphite and amorphous carbon phases. Through sonication, these nanostructures were fully dispersed in an isopropanol solution, concentrated, and subsequently deposited onto a clean silicon wafer via drop-casting. NCD films with a thickness of approximately 17 nm were successfully grown on the seeded Si substrate using a distributed antenna array (DAA) microwave plasma reactor. The resulting NCD films were homogeneous and of high quality. This self-sustaining and cost-effective approach to diamond film production presents promising technological opportunities, including applications in bio-implants.</p>

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Towards a bottom-up and economical approach to grow nanocrystalline diamond film

  • 期刊论文

  • 发表日期：

    2025年5月8日

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  • Arvind K Bhakta,
  • Abdoulaye Siby,
  • Sarah Al Zeibak,
  • Joel Jeevan,
  • Khaled Hassouni,
  • Souad Ammar,
  • Fabien Benedic,
  • Swaminathan Prasanna

摘要

We demonstrate the self-sustained growth of nanocrystalline diamond (NCD) films using gas-phase plasma-nucleated nanodiamonds as seeds. These nanodiamonds were produced using a microwave microplasma (MWMP) torch and were directly collected on a silicon substrate placed downstream. The resulting carbon nanostructures consisted of agglomerated nanodiamond particles ( 10 nm in size), along with graphite and amorphous carbon phases. Through sonication, these nanostructures were fully dispersed in an isopropanol solution, concentrated, and subsequently deposited onto a clean silicon wafer via drop-casting. NCD films with a thickness of approximately 17 nm were successfully grown on the seeded Si substrate using a distributed antenna array (DAA) microwave plasma reactor. The resulting NCD films were homogeneous and of high quality. This self-sustaining and cost-effective approach to diamond film production presents promising technological opportunities, including applications in bio-implants.