Ghosh, Shankar ; Sood, A. K. ; Rao, C. N. R. (2002) Electrochemical tuning of band structure of single-walled carbon nanotubes probed by in situ resonance Raman scattering Journal of Applied Physics, 92 (2). pp. 1165-1167. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v92/i2/p1165_...
Related URL: http://dx.doi.org/10.1063/1.1486024
Abstract
In situ resonance Raman scattering of single-walled carbon nanotubes investigated under electrochemical biasing demonstrates that the intensity of the radial breathing mode varies significantly in a nonmonotonic manner as a function of the cathodic bias voltage, but does not change appreciably under anodic bias. The tangential mode is, however, not affected. These results can be quantitatively understood in terms of the changes in the energy gaps between the one-dimensional van Hove singularities in the electron density of states arising possibly due to the alterations in the overlap integral of π bonds between the p orbitals of the adjacent carbon atoms.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
Keywords: | Carbon Nanotubes; Band Structure; Raman Spectra; Electrochemistry; Electronic Density of States; Bonds (chemical) |
ID Code: | 50286 |
Deposited On: | 22 Jul 2011 13:52 |
Last Modified: | 18 May 2016 04:38 |
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