TY - JOUR
T1 - Spectroscopic Sensing of O2-C2H2-C2H4 Flames for Diamond Growth Using Femtosecond Filamentation
AU - Zhou, Yun Shen
AU - Wang, Meng Meng
AU - Lu, Yao
AU - Silvain, Jean François
AU - Lu, Yong Feng
PY - 2017/6/7
Y1 - 2017/6/7
N2 - 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.
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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U2 - 10.1021/acs.cgd.7b00385
DO - 10.1021/acs.cgd.7b00385
M3 - Article
AN - SCOPUS:85020245263
VL - 17
SP - 3443
EP - 3449
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 6
ER -