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Effect of CNTs and Interfacial Defects on the Vibration of CNT-Based Hybrid Nanotubes

Y. Xiao, C. Y. Wang, Y. T. Feng, Yuntian Feng Orcid Logo, Chengyuan Wang Orcid Logo

International Journal of Applied Mechanics, Volume: 09, Issue: 03, Start page: 1750032

Swansea University Authors: Yuntian Feng Orcid Logo, Chengyuan Wang Orcid Logo

Abstract

A hybrid nanotube (HNT) is fabricated by coating carbon nanotubes (CNTs) with a concentric coating layer. Vibration of the HNTs is of great interest due to its potential applications in nano-resonators, nanosensors/actuators and nanogenerators. In particular, it is expected that the super stiff but...

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Published in: International Journal of Applied Mechanics
ISSN: 1758-8251 1758-826X
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa34342
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Abstract: A hybrid nanotube (HNT) is fabricated by coating carbon nanotubes (CNTs) with a concentric coating layer. Vibration of the HNTs is of great interest due to its potential applications in nano-resonators, nanosensors/actuators and nanogenerators. In particular, it is expected that the super stiff but very light CNTs would largely up-shift the vibration frequency and improve the performance of the achieved nanodevices. On the other hand, the hybrid structures may lead to the defects at the CNT-coating layer interface, which would down-shift the frequency and impair the integrity of the HNT. This paper aims to examine these issues by using a multiple-beam model for the pristine HNTs and a finite element model for the defective ones. The frequencies are obtained for the first five modes of the HNTs reinforced by a single-wall or a multi-wall CNT. It was shown that the strengthening effect of the CNTs is substantial for the high frequency vibrations of the HNTs with a thin coating layer. In this case, the inverse effect of the interfacial defects can also be observed.
Keywords: Hybrid nanotubes; carbon nanotubes; coating layer; vibration; interface defect
College: College of Engineering
Issue: 03
Start Page: 1750032