Rapid growth of diamond and its morphology by in-liquid plasma CVD

Harada, Y.; Hishinuma, R.; Terashima, Chiaki; Uetsuka, Hiroshi; Nakata, Kohei; Kondo, Takeshi; Yuasa, Makoto; Fujishima, Akira

doi:10.1016/j.diamond.2015.10.009

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Cited by 9 publications

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“…As reported by other workers, the relative growth rates in the [100] and [111] directions can also determine the crystal shape [24][25][26]. However, it is still urgently needed to give sufficient details about crystal shape evolution in order to depict the crystal growth mechanism.…”

Section: Resultsmentioning

confidence: 99%

A lifetime of changing calls: North Atlantic right whales, Eubalaena glacialis, refine call production as they age

et al. 2018

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Section: Resultsmentioning

confidence: 99%

A lifetime of changing calls: North Atlantic right whales, Eubalaena glacialis, refine call production as they age

et al. 2018

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“…The whole process can be divided into three steps. First, primary hydrocarbon radicals CHx, are formed when the hydrogen plasma attacks the graphite substrate [3,31,32]. The diamond precursor, methyl CH3, and other carbon species, like CH, C2 form in the plasma via reaction with hydrogen H, H2, and other species, and the diamond nucleation on graphite surface then occurs [33].…”

Section: Resultsmentioning

confidence: 99%

Diamond Deposition on Graphite in Hydrogen Microwave Plasma

Zhu

Yao

Dai

et al. 2018

J. Coat. Sci. Technol.

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Hydrogen plasma etching of graphite generates radicals that can be used for diamond synthesis by chemical vapor deposition (CVD). We studied the etching of polycrystalline graphite by a hydrogen microwave plasma, growth of diamond particles of the non-seeded graphite substrates, and characterized the diamond morphology, grain size distribution, growth rate, and phase purity. The graphite substrates served simultaneously as a carbon source, this being the specific feature of the process. A disorder of the graphite surface structure reduces as the result of the etching as revealed with Raman spectroscopy. The diamond growth rate of 3-5 µm/h was achieved, the quality of the produced diamond grains improving with growth time due to inherently nonstationary graphite etching process.

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