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Updated: May 21, 2026

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System
Published on: June 30, 2018
Electronic properties of nanoentities revealed by electrically driven rotation
D L Fan1, Frank Q Zhu, Xiaobin Xu
1Materials Science and Engineering Program, Texas Materials Institute, and Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, USA. dfan@austin.utexas.edu
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.
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