ISSN : 0970 - 020X, ONLINE ISSN : 2231-5039
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Abstract

Thin Double Wall Boron Nitride Nanotube: Nano-Cylindrical Capacitor

Marzieh Sadat Madani, Majid Monajjemi, Hossein Aghaei and Masoud Giahi

DOI : http://dx.doi.org/10.13005/ojc/330320


Abstract:

Experimental results have shown that a small single wall carbon Nano tubes (SWCNTs) can be usually found inside “multi-walled” (MWCNTs). In this work it has been reported the stabilities and electronic structure of the single wall boron nitride Nano-tube (SWBNNTs) inside SWBNNTs. It has been shown that the gap energies and that energy of BNNTs are strongly dependent on their diameters or chirality. When this kind of BNNTs are inserted in the larger one of SWBNNTs, the  gap energies of the double walled (DWBNNTs ) would even be much decreased due to the “coupled effect” of  “wall buckling” difference and inter-wall π-π* “hybridization”. DWBNNTs are used for a theoretical study of a cylindrical molecular capacitor, including an inner cylinder with a positive charge distribution and an outer cylinder with a negative charge distribution. Due to their semiconductor characteristic and dielectric functionalities of SWBNNTs, DWBNNTs can be used as a cylindrical capacitor for the electronic devices.

Keywords:

Single-wall BN-nanotubes; nano-cylindrical capacitors

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