Electronic properties of nanoentities revealed by electrically driven rotation

被引：36

作者：

Fan, D. L. ^{[1
,2
]}

Zhu, Frank Q. ^{[3
]}

Xu, Xiaobin ^{[1
,2
]}

Cammarata, Robert C. ^{[4
]}

Chien, C. L. ^{[4
,5
]}

机构：

[1] Univ Texas Austin, Texas Mat Inst, Mat Sci & Engn Program, Austin, TX 78712 USA

[2] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA

[3] Hitachi Global Storage Technol, San Jose, CA 95135 USA

[4] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

[5] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2012年 / 109卷 / 24期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

electric tweezers; nanoparticles; manipulation; MULTIWALLED CARBON NANOTUBES; QUANTUM CONDUCTANCE; TRANSPORT; NANOWIRES;

D O I：

10.1073/pnas.1200342109

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Direct electric measurement via small contacting pads on individual quasi-one-dimensional nanoentities, such as nanowires and carbon nanotubes, are usually required to access its electronic properties. We show in this work that 1D nanoentities in suspension can be driven to rotation by AC electric fields. The chirality of the resultantrotation unambiguously reveals whether the nanoentities are metal, semiconductor, or insulator due to the dependence of the Clausius-Mossotti factor on the material conductivity and frequency. This contactless method provides rapid and parallel identification of the electrical characteristics of 1D nanoentities.

引用

页码：9309 / 9313

页数：5

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