PubAg

Main content area

Electronic properties of nanoentities revealed by electrically driven rotation

Author:
Fan, D. L., Zhu, Frank Q., Xu, Xiaobin, Cammarata, Robert C., Chien, C. L.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2012 v.109 no.24 pp. 9309-9313
ISSN:
0027-8424
Subject:
carbon nanotubes, electric field, electrical properties, nanowires, semiconductors, stereoisomerism
Abstract:
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.
Agid:
1721109