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Vibration of Piezoelectric ZnO-SWCNT Nanowires / Yao Xiao, Chengyuan Wang, Yuantian Feng, Yuntian Feng

Nanomaterials, Volume: 6, Issue: 12, Start page: 242

Swansea University Authors: Chengyuan Wang, Yuntian Feng

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DOI (Published version): 10.3390/nano6120242

Abstract

A hybrid nanowire (HNW) was constructed by coating a single-wall carbon nanotube (SWCNT) with piezoelectric zinc oxide (ZnO). The two components of the HNW interact with each other via the van der Waals (vdW) force. This paper aims to study the effect of the piezoelectricity in the ZnO layer and the...

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Published in: Nanomaterials
ISSN: 2079-4991
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa31382
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Abstract: A hybrid nanowire (HNW) was constructed by coating a single-wall carbon nanotube (SWCNT) with piezoelectric zinc oxide (ZnO). The two components of the HNW interact with each other via the van der Waals (vdW) force. This paper aims to study the effect of the piezoelectricity in the ZnO layer and the inter-phase vdW interaction on the fundamental vibration of the HNWs. In doing this, a new model was developed where the two components of the HNWs were modeled as Euler beams coupled via the interphase vdW interaction. Based on the model, the dependence of the frequency on an applied electrical voltage was calculated for HNWs of different geometric sizes to reveal the voltage effect. The results were then compared with those calculated without considering the inter-phase vdW interaction. It was found that the interphase vdW interaction can substantially decrease the structural stiffness, leading to a greatly enhanced piezoelectric effect but a lower frequency for the vibration of the HNWs.
College: College of Engineering
Issue: 12
Start Page: 242