Fast growth of diamond crystals in open air by combustion synthesis with resonant laser energy coupling

Zhiqiang Xie, Yunshen Zhou, Xiangnan He, Yang Gao, Jongbok Park, Hao Ling, Lan Jiang, Yongfeng Lu

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Fast growth of diamond crystals in open air was achieved by combustion synthesis with resonant laser energy coupling. A premixed C2H 4/C2H2/O2 gas mixture was used as precursors for growth of diamond crystals. Through the resonant excitation of the CH2 wagging mode of the ethylene (C2H4) molecules using a CO2 laser tuned at 10.532 m, high-quality diamond crystals were grown on silicon substrates with a high growth rate at ~139 m/h. Diamond crystals with a length up to 5 mm and a diameter of 1 mm were grown in 36 h. Sharp Raman peaks at 1332 cm'1 with full width at half-maximum (fwhm) values around 4.5 cm'1 and distinct X-ray diffraction spectra demonstrated the high quality of the diamond crystals. The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy.

Original languageEnglish (US)
Pages (from-to)1762-1766
Number of pages5
JournalCrystal Growth and Design
Volume10
Issue number4
DOIs
StatePublished - Apr 7 2010

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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