CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
Prev
Next
|
|
|
Effects of doping, Stone–Wales, and vacancy defects on thermal conductivity of single-wall carbon nanotubes |
Feng Dai-Li (冯黛丽), Feng Yan-Hui (冯妍卉), Chen Yang (陈阳), Li Wei (李威), Zhang Xin-Xin (张欣欣) |
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China |
|
|
Abstract The thermal conductivity of carbon nanotubes with certain defects (doping, Stone-Wales, and vacancy) is investigated using non-equilibrium molecular dynamics method. The defective carbon nanotubes (CNTs) are compared with perfect tubes. The influences of type and concentration of the defect, length, diameter, and chirality of the tube, and the ambient temperature are taken into consideration. It is demonstrated that defects result in a dramatic reduction of thermal conductivity. Doping and Stone-Wales (SW) defects have greater effect on armchair tubes, while vacancy affects the zigzag ones more. Thermal conductivity of the nanotubes increases, reaches a peak, and then decreases with increasing temperature. The temperature at which the thermal conductivity peak occurs is dependent on the defect type. Different from SW or vacancy tubes, doped tubes are similar to the perfect ones with a sharp peak at the same temperature. Thermal conductivity goes up when the tube length grows or diameter declines. It seems that the length of thermal conductivity convergence for SW tubes is much shorter than perfect or vacancy ones. The SW or vacancy tubes are less sensitive to the diameter change, compared with perfect ones.
|
Received: 30 May 2012
Revised: 15 June 2012
Accepted manuscript online:
|
PACS:
|
65.80.-g
|
(Thermal properties of small particles, nanocrystals, nanotubes, and other related systems)
|
|
61.48.De
|
(Structure of carbon nanotubes, boron nanotubes, and other related systems)
|
|
63.22.Gh
|
(Nanotubes and nanowires)
|
|
02.60.Cb
|
(Numerical simulation; solution of equations)
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50876010 and 51176011) and the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-08-0721). |
Corresponding Authors:
Feng Yan-Hui
E-mail: yhfeng@me.ustb.edu.cn
|
Cite this article:
Feng Dai-Li (冯黛丽), Feng Yan-Hui (冯妍卉), Chen Yang (陈阳), Li Wei (李威), Zhang Xin-Xin (张欣欣) Effects of doping, Stone–Wales, and vacancy defects on thermal conductivity of single-wall carbon nanotubes 2013 Chin. Phys. B 22 016501
|
[1] |
Iijima S 1991 Nature 354 56
|
[2] |
Deng F, Zheng Q S, Wang L F and Nan C W 2007 Appl. Phys. Lett. 90 021914
|
[3] |
Ujereh S, Fisher T and Mudawar I 2007 Int. J. Heat Mass Transfer 50 4023
|
[4] |
Meunier V and Lambin P H 2000 Carbon 38 1729
|
[5] |
Nardelli B M, Fattebert J L, Orlikowski D, Roland C, Zhao Q and Bernholc J 2000 Carbon 38 1703
|
[6] |
Cummings A, Osman M, Srivastava D and Menon M 2004 Phys. Rev. B 70 115405
|
[7] |
Meng F Y, Ogata S, Xu D S, Shibutani Y and Shi S Q 2007 Phys. Rev. B 75 205403
|
[8] |
Bi K, Chen Y and Yang J 2006 Phys. Lett. A 350 150
|
[9] |
Che J, Cagin T and Goddard III W 2000 Nanotechnology 11 65
|
[10] |
Kondo N, Yamamoto T and Watanabe K 2006 e-J. Surf. Sci. Nanotech. 4 239
|
[11] |
Zhang G and Li B 2005 J. Chem. Phys. 123 114714
|
[12] |
Li W, Feng Y H, Zhang X X and Chen Y 2012 Acta Phys. Sin. 61 (in Chinese)
|
[13] |
Jin L, Fu H G, Xie Y and Yu H T 2012 Chin. Phys. B 21 057901
|
[14] |
Wang Y J, Wang L D, Yang M and Yan C 2011 Chin. Phys. B 20 117304
|
[15] |
Zhang L J, Hu H F, Wang Z Y, Chen N T, Xie N and Lin B 2011 Acta Phys. Sin. 60 077209 (in Chinese)
|
[16] |
Luo Y P, Tien L G, Tsai C H, Lee M H and Li F Y 2011 Chin. Phys. B 20 087303
|
[17] |
Brenner D W, Shenderova O A, Harrison J A, Stuart S J, Ni B and Sinnott S B 2002 J. Phys.: Condens. Matter 14 783
|
[18] |
Bao W X, Zhu C C and Cui W Z 2004 Physica B 352 156
|
[19] |
Berendsen H J C, Postma J P M, Gunsteren W F, Dinola A and Haak J R 1984 J. Chem. Phys. 81 3684
|
[20] |
Schneider T and Stoll E 1978 Phys. Rev. B 17 1302
|
[21] |
Allen M P and Tildesley D J 1987 Computer Simulation of Liquids (Oxford: Clarendon Press)
|
[22] |
Mingo N 2005 Nano Lett. 5 1221
|
[23] |
Wang J and Wang J S 2006 Appl. Phys. Lett. 88 111909
|
[24] |
Shiomi J and Maruyama S 2008 Phys. Rev. B 78 205406
|
[25] |
Maruyama S, Kojima R, Miyauchi Y, Chiashi S and Kohno M 2002 Chem. Phys. Lett. 360 229
|
[26] |
Mingo N 2005 Phys. Rev. Lett. 95 096105
|
[27] |
Yan X H, Xiao Y and Li Z M 2006 J. Appl. Phys. 99 124305
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|