Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression

The mechanical response of thirteen different helical multi-walled carbon nanocoils to axial compression is reported. Each nanocoil was attached to the apex of a cantilever probe tip; its dimensions and orientation relative to the tip apex were determined with scanning electron microscopy. The atomi...

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Main Authors: Jabulani R. Barber, Jeffrey S. Boyles, Aldo A. Ferri, Lawrence A. Bottomley
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Journal of Nanotechnology
Online Access:http://dx.doi.org/10.1155/2014/616240
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author Jabulani R. Barber
Jeffrey S. Boyles
Aldo A. Ferri
Lawrence A. Bottomley
author_facet Jabulani R. Barber
Jeffrey S. Boyles
Aldo A. Ferri
Lawrence A. Bottomley
author_sort Jabulani R. Barber
collection DOAJ
description The mechanical response of thirteen different helical multi-walled carbon nanocoils to axial compression is reported. Each nanocoil was attached to the apex of a cantilever probe tip; its dimensions and orientation relative to the tip apex were determined with scanning electron microscopy. The atomic force microscope was employed to apply a cyclic axial load on the nanocoil. Its mechanical response was determined by simultaneous collection of the thermal resonance frequency, displacement, and oscillation amplitude of the cantilever-nanotube system in real time. Depending upon compression parameters, each coil underwent buckling, bending, and slip-stick motion. Characteristic features in the thermal resonance spectrum and in the force and oscillation amplitude curves for each of these responses to induced stress are presented. Following compression studies, the structure and morphology of each nanocoil were determined by transmission electron microscopy. The compression stiffness of each nanocoil was estimated from the resonant frequency of the cantilever at the point of contact with the substrate surface. From this value, the elastic modulus of the nanocoil was computed and correlated with the coiled carbon nanotube’s morphology.
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institution Kabale University
issn 1687-9503
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spelling doaj-art-7e6389349428413f99949e36811877c52025-02-03T06:14:09ZengWileyJournal of Nanotechnology1687-95031687-95112014-01-01201410.1155/2014/616240616240Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial CompressionJabulani R. Barber0Jeffrey S. Boyles1Aldo A. Ferri2Lawrence A. Bottomley3Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332-0400, USAGeorgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332-0400, USAGeorgia Institute of Technology, The George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332-0405, USAGeorgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332-0400, USAThe mechanical response of thirteen different helical multi-walled carbon nanocoils to axial compression is reported. Each nanocoil was attached to the apex of a cantilever probe tip; its dimensions and orientation relative to the tip apex were determined with scanning electron microscopy. The atomic force microscope was employed to apply a cyclic axial load on the nanocoil. Its mechanical response was determined by simultaneous collection of the thermal resonance frequency, displacement, and oscillation amplitude of the cantilever-nanotube system in real time. Depending upon compression parameters, each coil underwent buckling, bending, and slip-stick motion. Characteristic features in the thermal resonance spectrum and in the force and oscillation amplitude curves for each of these responses to induced stress are presented. Following compression studies, the structure and morphology of each nanocoil were determined by transmission electron microscopy. The compression stiffness of each nanocoil was estimated from the resonant frequency of the cantilever at the point of contact with the substrate surface. From this value, the elastic modulus of the nanocoil was computed and correlated with the coiled carbon nanotube’s morphology.http://dx.doi.org/10.1155/2014/616240
spellingShingle Jabulani R. Barber
Jeffrey S. Boyles
Aldo A. Ferri
Lawrence A. Bottomley
Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
Journal of Nanotechnology
title Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
title_full Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
title_fullStr Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
title_full_unstemmed Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
title_short Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
title_sort empirical correlation of the morphology of coiled carbon nanotubes with their response to axial compression
url http://dx.doi.org/10.1155/2014/616240
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