Low-temperature plasmas in carbon nanostructure synthesis

Levchenko, Igor, Keidar, Michael, Xu, Shuyan, Kersten, Holger, & Ostrikov, Kostya (2013) Low-temperature plasmas in carbon nanostructure synthesis. Journal of Vacuum Science & Technology B : Microelectronics and Nanometer Structures, 31(5), 050801.

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Plasma-based techniques offer many unique possibilities for the synthesis of various nanostructures both on the surface and in the plasma bulk. In contrast to the conventional chemical vapor deposition and some other techniques, plasma-based processes ensure high level of controllability, good quality of the produced nanomaterials, and reduced environmental risk. In this work, the authors briefly review the unique features of the plasma-enhanced chemical vapor deposition approaches, namely, the techniques based on inductively coupled, microwave, and arc discharges. Specifically, the authors consider the plasmas with the ion/electron density ranging from 10^10 to 10^14 cm−3, electron energy in the discharge up to ∼10 eV, and the operating pressure ranging from 1 to 10^4 Pa (up to 105 Pa for the atmospheric-pressure arc discharges). The operating frequencies of the discharges considered range from 460 kHz for the inductively coupled plasmas, and up to 2.45 GHz for the microwave plasmas. The features of the direct-current arc discharges are also examined. The authors also discuss the principles of operation of these systems, as well as the effects of the key plasma parameters on the conditions of nucleation and growth of the carbon nanostructures, mainly carbon nanotubes and graphene. Advantages and disadvantages of these plasma systems are considered. Future trends in the development of these plasma-based systems are also discussed.

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17 citations in Scopus
21 citations in Web of Science®
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ID Code: 73566
Item Type: Journal Article
Refereed: Yes
DOI: 10.1116/1.4821635
ISSN: 2166-2746
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 09 Jul 2014 01:23
Last Modified: 21 Jun 2017 21:01

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