Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry

Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry

The thermal conductivities and elastic properties of carbon nanotubes (CNTs) are estimated by using the double-inclusion model, which is based on rigorous elasticity approach. The model regards a CNT as one inclusion (the inner cylindrical void) embedded in the other (the outer coaxial single-crysta...

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Main Authors: Z. H. Zhang, N. Yu, W. H. Chao
Format: Article
Language:English
Published: Hindawi Limited 2012-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2012/939806
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spelling doaj-89d8de611e4e4dd28923baabc1946f972020-11-24T20:45:12ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292012-01-01201210.1155/2012/939806939806Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube GeometryZ. H. Zhang0N. Yu1W. H. Chao2Department of Mechanical Engineering, Yuan Ze University, Jhongli 32003, TaiwanDepartment of Mechanical Engineering, Yuan Ze University, Jhongli 32003, TaiwanDepartment of Mechanical Engineering, Yuan Ze University, Jhongli 32003, TaiwanThe thermal conductivities and elastic properties of carbon nanotubes (CNTs) are estimated by using the double-inclusion model, which is based on rigorous elasticity approach. The model regards a CNT as one inclusion (the inner cylindrical void) embedded in the other (the outer coaxial single-crystal graphite shell). The concept of homogenization is employed, and vital microstructural parameters, such as CNT diameter, length, and aspect ratio, are included in the present model. The relationship between microstructure and thermal conductivities and elastic stiffness of CNTs is quantitatively characterized. Our analytical results, benchmarked by experimental data, show that the thermal conductivities and elastic stiffness of CNTs are strongly dependent on the diameter of CNT with little dependence on the length of CNT.http://dx.doi.org/10.1155/2012/939806
collection DOAJ
language English
format Article
sources DOAJ
author Z. H. Zhang
N. Yu
W. H. Chao
spellingShingle Z. H. Zhang
N. Yu
W. H. Chao
Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
Journal of Nanomaterials
author_facet Z. H. Zhang
N. Yu
W. H. Chao
author_sort Z. H. Zhang
title Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
title_short Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
title_full Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
title_fullStr Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
title_full_unstemmed Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry
title_sort estimating the thermal conductivities and elastic stiffness of carbon nanotubes as a function of tube geometry
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2012-01-01
description The thermal conductivities and elastic properties of carbon nanotubes (CNTs) are estimated by using the double-inclusion model, which is based on rigorous elasticity approach. The model regards a CNT as one inclusion (the inner cylindrical void) embedded in the other (the outer coaxial single-crystal graphite shell). The concept of homogenization is employed, and vital microstructural parameters, such as CNT diameter, length, and aspect ratio, are included in the present model. The relationship between microstructure and thermal conductivities and elastic stiffness of CNTs is quantitatively characterized. Our analytical results, benchmarked by experimental data, show that the thermal conductivities and elastic stiffness of CNTs are strongly dependent on the diameter of CNT with little dependence on the length of CNT.
url http://dx.doi.org/10.1155/2012/939806
work_keys_str_mv AT zhzhang estimatingthethermalconductivitiesandelasticstiffnessofcarbonnanotubesasafunctionoftubegeometry
AT nyu estimatingthethermalconductivitiesandelasticstiffnessofcarbonnanotubesasafunctionoftubegeometry
AT whchao estimatingthethermalconductivitiesandelasticstiffnessofcarbonnanotubesasafunctionoftubegeometry
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