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Raman Spectroscopic Investigations of Carbon Onion by Liquid Arc

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The discovery of the carbon onions in 1992 by Ugarte opens a new area of carbon research of science such as mesoscopic physics and modern material science. In this paper, large-scale carbon onions were synthesized by liquid arc method. Raman spectra of carbon onions had been investigated in the range of 100 to 3000 cm−1. Both the widths and the intensities of the bands were found to be substantially analyzed. The strain of graphitizing planes due to curvature had been estimated analytically and was used to account for the downward shift of the G peak. Moreover, new Raman peaks could also be observed in the higher wave number region of the spectrum, due to curvature of the graphitizing planes in the shells.
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Keywords: CARBON ONIONS; LIQUID ARC-DISCHARGE; RAMAN SPECTRA

Document Type: Research Article

Publication date: 2009-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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