Diamond single micro-crystals and graphitic micro-balls' formation in plasmoids under atmospheric pressure

Plasmoids are produced in the argon filamentary discharge. By going through hydrocarbon gas, the plasmoids collect carbon material. These plasmoids produce diamond single micro-crystals upon contact on the inner surface of cavity in air atmosphere. When the plasmoid's contact point on the subst...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2015-03, Vol.48 (11), p.115201-5
Main Authors: Pothiraja, Ramasamy, Kartaschew, Konstantin, Bibinov, Nikita, Havenith, Martina, Awakowicz, Peter
Format: Article
Language:English
Subjects:
Atmospheric pressure
Carbon
compressive intrinsic residual stress
Compressive properties
Contact
Deposition
diamond single micro-crystal
Diamonds
graphitic micro-ball
Plasmoids
raman microspectroscopy
Residual stress
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Summary:Plasmoids are produced in the argon filamentary discharge. By going through hydrocarbon gas, the plasmoids collect carbon material. These plasmoids produce diamond single micro-crystals upon contact on the inner surface of cavity in air atmosphere. When the plasmoid's contact point on the substrate is in inert atmosphere, they deposit their material as micro-balls with a graphite core. The dimension and nature of the micro-materials deposited by the plasmoids are analysed using scanning electron microscopy and Raman microspectroscopy. The compressive residual stress in the deposited micro-diamonds varies in the range −7 to −21 GPa.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/48/11/115201