Effect of coiling on the electronic properties along single-wall carbon nanotubes

被引：36
|
作者：
Castrucci, P
Scarselli, M
De Crescenzi, M
El Khakani, MA
Rosei, F
Braidy, N
Yi, JH
机构：
[1] Univ Roma Tor Vergata, Dipartimento Fis, Unita INFM, I-00133 Rome, Italy
[2] INRS Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada
来源：
APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 17期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1063/1.1809277
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Straight and coiled single-wall carbon nanotubes (SWCNTs) synthesized by laser vaporization were dispersed on highly oriented pyrolitic graphite. Their morphology and electrical properties were investigated by scanning tunneling microscopy (STM). STM images revealed that the SWCNTs (either straight or coiled) often self-organize into bundles of two or more tubes and are rarely found alone. The conductance measured along a periodically coiled CNT was found to increase at locations where the CNT is squeezed, while it decreases significantly in unsqueezed regions characterized by an unperturbed hexagonal network. This provides experimental evidence of significant conductance modulation along a one-dimensional system on the nanometer scale. (C) 2004 American Institute of Physics.
引用
收藏
页码：3857 / 3859
页数：3
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