Cargando…

Low thermal conductivity in ultrathin carbon nanotube (2, 1)

Molecular dynamic simulations reveal that the ultrathin carbon nanotube (CNT) (2, 1) with a reconstructed structure exhibits a surprisingly low thermal conductivity, which is only ~16–30% of those in regular CNTs, e.g. CNT (2, 2) and (5, 5). Detailed lattice dynamic calculations suggest that the aco...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhu, Liyan, Li, Baowen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4017211/
https://www.ncbi.nlm.nih.gov/pubmed/24815003
http://dx.doi.org/10.1038/srep04917
_version_ 1782315620108337152
author Zhu, Liyan
Li, Baowen
author_facet Zhu, Liyan
Li, Baowen
author_sort Zhu, Liyan
collection PubMed
description Molecular dynamic simulations reveal that the ultrathin carbon nanotube (CNT) (2, 1) with a reconstructed structure exhibits a surprisingly low thermal conductivity, which is only ~16–30% of those in regular CNTs, e.g. CNT (2, 2) and (5, 5). Detailed lattice dynamic calculations suggest that the acoustic phonon modes greatly soften in CNT (2, 1) as compared to regular CNTs. Moreover, both phonon group velocities and phonon lifetimes strikingly decrease in CNT (2, 1), which result in the remarkable reduction of thermal conductivity. Besides, isotope doping and chemical functionalization enable the further reduction of thermal conductivity in CNT (2, 1).
format Online
Article
Text
id pubmed-4017211
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-40172112014-05-13 Low thermal conductivity in ultrathin carbon nanotube (2, 1) Zhu, Liyan Li, Baowen Sci Rep Article Molecular dynamic simulations reveal that the ultrathin carbon nanotube (CNT) (2, 1) with a reconstructed structure exhibits a surprisingly low thermal conductivity, which is only ~16–30% of those in regular CNTs, e.g. CNT (2, 2) and (5, 5). Detailed lattice dynamic calculations suggest that the acoustic phonon modes greatly soften in CNT (2, 1) as compared to regular CNTs. Moreover, both phonon group velocities and phonon lifetimes strikingly decrease in CNT (2, 1), which result in the remarkable reduction of thermal conductivity. Besides, isotope doping and chemical functionalization enable the further reduction of thermal conductivity in CNT (2, 1). Nature Publishing Group 2014-05-12 /pmc/articles/PMC4017211/ /pubmed/24815003 http://dx.doi.org/10.1038/srep04917 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images in this article are included in the article's Creative Commons license, unless indicated otherwise in the image credit; if the image is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the image. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Zhu, Liyan
Li, Baowen
Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title_full Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title_fullStr Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title_full_unstemmed Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title_short Low thermal conductivity in ultrathin carbon nanotube (2, 1)
title_sort low thermal conductivity in ultrathin carbon nanotube (2, 1)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4017211/
https://www.ncbi.nlm.nih.gov/pubmed/24815003
http://dx.doi.org/10.1038/srep04917
work_keys_str_mv AT zhuliyan lowthermalconductivityinultrathincarbonnanotube21
AT libaowen lowthermalconductivityinultrathincarbonnanotube21