Department of Physics Papers

Document Type

Journal Article

Date of this Version

11-14-2007

Abstract

We develop and solve a continuum theory for the piezoelectric response of nanotubes under applied uniaxial and torsional stresses. We find that the piezoelectric response is controlled by the chiral angle, the aspect ratio, and two dimensionless parameters specifying the ratio of the strengths of the electrostatic and elastic energies. The model is solved in two limiting cases and the solutions are discussed. These systems are found to have several unexpected physical effects not seen in conventional bulk systems, including a strong stretch-twist coupling and the development of a significant bound charge density in addition to a surface charge density. The model is applied to estimate the piezoelectric response of a boron nitride nanotube under uniform tensile stress.

Comments

Suggested Citation:
Michalski, P.J. and Mele, E.J. (2007). Continuum theory for piezoelectric response of chiral nanotubes under uniaxial and torsional stresses. Physical Review B. 76, 205419.

© 2007 The American Physical Society
http://dx.doi.org/10.1103/PhysRevB.76.205419

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Date Posted: 30 March 2011

This document has been peer reviewed.