Van der Waals energy surface of a carbon nanotube sheet

被引：5

作者：

Motahari, S. ^{[1
]}

Shayeganfar, F. ^{[2
]}

Neek-Amal, M. ^{[1
]}

机构：

[1] Shahid Rajaee Teacher Training Univ, Dept Phys, Tehran 16785136, Iran

[2] Sharif Univ Technol, Dept Phys, Tehran, Iran

来源：

SOLID STATE COMMUNICATIONS | 2012年 / 152卷 / 03期

关键词：

Carbon nanotube sheet; Atomistic model; Continuum model; Van der waals energy surface;

D O I：

10.1016/j.ssc.2011.10.035

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The van der Walls interaction between a carbon nanotube sheet (CNTS) and a rare gas atom, is studied using both atomistic and continuum approaches. We present analytical expressions for the van der Waals energy of continuous nanotubes interacting with a rare gas atom. if is found that the continuum approach does not properly treat the effect of atomistic configurations on the energy surfaces. The energy barriers are small as compared to the thermal energy, which implies the free motion above the CNTS in heights about one nanometer. In contrast to the energy surface of a graphene sheet, the honeycomb lattice structure in the energy surface of a CNTS is imperceivable. Defects alter the energy surface which therefore influence the gas adsorption mechanism. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：225 / 230

页数：6

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