Spectroscopic Sensing of O2-C2H2-C2H4 Flames for Diamond Growth Using Femtosecond Filamentation

Yun Shen Zhou; Meng Meng Wang; Yao Lu; Jean François Silvain; Yong Feng Lu

doi:10.1021/acs.cgd.7b00385

Spectroscopic Sensing of O₂-C₂H₂-C₂H₄ Flames for Diamond Growth Using Femtosecond Filamentation

Yun Shen Zhou, Meng Meng Wang, Yao Lu, Jean François Silvain, Yong Feng Lu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The influence of the resonant vibrational excitation of the ethylene wagging mode (u₇, 949.3 cm^-1) on the combustion chemical vapor deposition of diamond was studied via femtosecond laser-induced filamentation (FLIF) spectroscopy. The O₂-C₂H₂-C₂H₄ flame filaments were sampled within the diamond-formation zones to investigate the evolution of the diamond-formation-related species. In addition to higher diamond growth rates, increasing the incident laser power density led to the transitions of diamond crystal facets and quality as the results of competition between carbon-containing and OH-containing species. Evaluated using the C₂/OH number density ratio, {100}-faceted diamond crystals were obtained at the C₂/OH ratio of 110.00, while {111}-faceted diamond crystals were produced at the C₂/OH ratio of 133.34.

Original language	English
Pages (from-to)	3443-3449
Number of pages	7
Journal	Crystal Growth and Design
Volume	17
Issue number	6
DOIs	https://doi.org/10.1021/acs.cgd.7b00385
Publication status	Published - 7 Jun 2017
Externally published	Yes

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title = "Spectroscopic Sensing of O2-C2H2-C2H4 Flames for Diamond Growth Using Femtosecond Filamentation",

abstract = "The influence of the resonant vibrational excitation of the ethylene wagging mode (u7, 949.3 cm-1) on the combustion chemical vapor deposition of diamond was studied via femtosecond laser-induced filamentation (FLIF) spectroscopy. The O2-C2H2-C2H4 flame filaments were sampled within the diamond-formation zones to investigate the evolution of the diamond-formation-related species. In addition to higher diamond growth rates, increasing the incident laser power density led to the transitions of diamond crystal facets and quality as the results of competition between carbon-containing and OH-containing species. Evaluated using the C2/OH number density ratio, {100}-faceted diamond crystals were obtained at the C2/OH ratio of 110.00, while {111}-faceted diamond crystals were produced at the C2/OH ratio of 133.34.",

author = "Zhou, {Yun Shen} and Wang, {Meng Meng} and Yao Lu and Silvain, {Jean Fran{\c c}ois} and Lu, {Yong Feng}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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doi = "10.1021/acs.cgd.7b00385",

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AU - Zhou, Yun Shen

AU - Wang, Meng Meng

AU - Lu, Yao

AU - Silvain, Jean François

AU - Lu, Yong Feng

PY - 2017/6/7

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AB - The influence of the resonant vibrational excitation of the ethylene wagging mode (u7, 949.3 cm-1) on the combustion chemical vapor deposition of diamond was studied via femtosecond laser-induced filamentation (FLIF) spectroscopy. The O2-C2H2-C2H4 flame filaments were sampled within the diamond-formation zones to investigate the evolution of the diamond-formation-related species. In addition to higher diamond growth rates, increasing the incident laser power density led to the transitions of diamond crystal facets and quality as the results of competition between carbon-containing and OH-containing species. Evaluated using the C2/OH number density ratio, {100}-faceted diamond crystals were obtained at the C2/OH ratio of 110.00, while {111}-faceted diamond crystals were produced at the C2/OH ratio of 133.34.

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Spectroscopic Sensing of O₂-C₂H₂-C₂H₄ Flames for Diamond Growth Using Femtosecond Filamentation

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