Reversible separation of single-walled carbon nanotubes in bundles

被引：2

作者：

Sahoo, Sangeeta ^{[1
]}

Maranganti, Ravi ^{[2
]}

Lastella, Sarah ^{[1
]}

Mallick, Govind ^{[3
]}

Karna, Shashi ^{[3
]}

Sharma, Pradeep ^{[2
]}

Ajayan, Pulickel M. ^{[4
]}

机构：

[1] Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA

[2] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

[3] USA, Res Lab, AMSRD ARL WM BD, Weap & Mat Directorate, Aberdeen Proving Ground, MD 21005 USA

[4] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 08期

基金：

美国国家科学基金会;

关键词：

Separation;

D O I：

10.1063/1.2976631

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We show that electrostatic charging of nanotubes and the consequent repulsion can lead to reversible separation of individual single-walled carbon nanotubes in bundles. Low-energy electron beam irradiation leads to this completely reversible phenomenon. A simple semianalytical model is used to explain the observed separation mechanism. The reversibility of the separation process is attributed to discharging and thermal-fluctuation induced motion of the nanotubes in ambient air. Further, the separation impacts the electrical conductance of small nanotube bundled devices. (c) 2008 American Institute of Physics.

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页数：3

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