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Dispersion relation of dust acoustic waves in metallic multi-walled carbon nanotubes |
Ali Fathaliana)b)† and Shahram Nikjoa) |
a. Department of Physics, Razi University, Kermanshah, Iran;
b. Department of Nano Science, Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran |
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Abstract In this paper, a charged multi-walled carbon nanotube (MWCNT), which is surrounded by charged nanoparticles, is modeled as a cylindrical shell of electron--ion--dust plasma. By employing classical electrodynamics formulations and the linearized hydrodynamic model, the dispersion relation of the dust acoustic wave oscillations in the composed system is investigated. We obtain a new low-frequency electrostatic excitation in the MWCNT, i.e. dust acoustic wave oscillations.
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Received: 22 October 2011
Revised: 27 April 2012
Accepted manuscript online:
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PACS:
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73.43.Lp
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(Collective excitations)
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52.35.Fp
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(Electrostatic waves and oscillations (e.g., ion-acoustic waves))
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Cite this article:
Ali Fathalian and Shahram Nikjo Dispersion relation of dust acoustic waves in metallic multi-walled carbon nanotubes 2012 Chin. Phys. B 21 057306
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