Mechanical properties and electronic structures of one BN nanotube under radial compression

doi:10.1007/s11706-009-0024-1

Front Mater Sci Chin

2009, Vol. 3

Issue (2) : 201-204 https://doi.org/10.1007/s11706-009-0024-1

RESEARCH ARTICLE

Mechanical properties and electronic structures of one BN nanotube under radial compression

Hai-jun SHEN(

)

School of Aeronautics & Astronautics, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China

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Abstract

The Tersoff-potential based MD (molecular dynamics) method was used to simulate the radial compression of one (10,0) BN nanotube, and its compressive properties was compared with those of one (10,0) carbon nanotube. The semi-empirical PM3 QC (Quantum chemistry) method was adopted to calculate the electronic structures of the compressed BN-tube, and the effect of the radial compression on the electronic structures of the BN-tube was discussed. It is shown that (i) BN-tube has comparable radial compressive stiffness to carbon-tube, but lower energy-absorbing, load-support and deformation-support capabilities, and (ii) with the increase of compressive strain, the HOMO energy of the BN-tube increases, the LUMO energy and the LUMO-HOMO energy-gap decrease, and its chemical activity and conductance increase.

Keywords BN nanotube radial compression compressive properties electronic structures

Corresponding Author(s): SHEN Hai-jun,Email:Shj@nuaa.edu.cn

Issue Date: 05 June 2009

Cite this article:

Hai-jun SHEN. Mechanical properties and electronic structures of one BN nanotube under radial compression[J]. Front Mater Sci Chin, 2009, 3(2): 201-204.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-009-0024-1
https://academic.hep.com.cn/foms/EN/Y2009/V3/I2/201

Fig.1 The (10,0) BN nanotube

Fig.2 The compressive deformation of BN-tube: =9%;=17%;=27%;=30%

Fig.3 The changes of energy and force for compressed BN- or carbon-tube: D curves; curves

Fig.4 The changes of FMO energy for the compressed BN-tube

Fig.5 The effects of compressive deformation on the LUMO, HOMO, and LUMO-HOMO energy

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