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The thermal conductivity of carbon nanotube (CNT) Y junctions and the thermal rectification behavior in the Y junctions have been investigated by means of classical non-equilibrium molecular dynamics simulation with quantum effects considered. The results indicate that the thermal conductivity of a CNT Y junction is about 12%–85% lower than a (10,10) pristine CNT. The thermal conductivity of the Y junction in the positive direction, when the heat flux is directed from the stem to branches, is always higher than that of the reverse direction, i.e. from branches to the stem. The decline of the thermal conductivity due to the existence of Y junctions decreases with increasing temperature. The thermal rectification coefficient of the Y junction first decreases and then increases with the increase of temperature.
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Keywords:
- carbon nanotube /
- thermal conductivity /
- rectification
[1] Biro L P, Horváth Z E, Márk G I, Osváth Z, Koós A A, Benito A M, Maser W, Lambin P 2004 Diamond and related materials 13 2
[2] Li J, Papadopoulos C, Xu J 1999 Nature 402 6759
[3] Satishkumar B C, Thomas P J, Govindaraj A, Rao C 2000 Appl. Phys. Lett. 77 16
[4] Andriotis A N, Menon M, Srivastava D, Chernozatonskii L 2001 Phys. Rev. Lett. 87 6
[5] Andriotis A N, Menon M, Srivastava D, Chernozatonskii L 2002 Phys. Rev. B 65 16
[6] Noya E G, Srivastava D, Menon M 2009 Phys. Rev. B 79 11
[7] Wang L, Li B 2007 Phys. Rev. Lett. 99 17
[8] Starr C 1936 Physics 7 1
[9] Chien S K, Yang Y T, Chen C K 2010 Phys. Lett. A 374 48
[10] Vallabhaneni A K, Hu J, Chen Y P, Ruan X 2011 Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference Hawaii, USA, March 13-17, 2011
[11] Wu G, Li B 2007 Phys. Rev. B 76 8
[12] Bui K, Nguyen H, Cousin C, Striolo A, Papavassiliou D V 2012 The Journal of Physical Chemistry C 116 7
[13] Roberts N A, Walker D G 2011 International Journal of Thermal Sciences 133
[14] Crespi V H 1998 Phys. Rev. B 58 12
[15] Hone J, Whitney M, Piskoti C, Zettl A 1999 Phys. Rev. B 59 4
[16] Berber S, Kwon Y K, Tománek D 2000 Phys. Rev. Lett. 84 20
[17] Che J, Cagin T, William Iii A G 2000 Nanotechnology 11 65
[18] Brenner D W 1990 Phys. Rev. B 42 15
[19] Lukes J R, Zhong H 2007 Journal of heat transfer 129 705
[20] Ren C, Xu Z, Zhang W, Li Y, Zhu Z, Huai P 2010 Phys. Lett. A 374 17
[21] Yang H S, Bai G R, Thompson L J, Eastman J A 2002 Acta Materialia 50 9
[22] Kondo N, Yamamoto T, Watanabe K 2006 E-Journal of Surface Science and Nanotechnology 4
[23] Li W, Feng Y H, Zhang X X, Chen Y 2012 Acta Phys. Sin. 61 136102 (in Chinese) [李威, 冯妍卉, 张欣欣, 陈阳 2012 54 136102]
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[1] Biro L P, Horváth Z E, Márk G I, Osváth Z, Koós A A, Benito A M, Maser W, Lambin P 2004 Diamond and related materials 13 2
[2] Li J, Papadopoulos C, Xu J 1999 Nature 402 6759
[3] Satishkumar B C, Thomas P J, Govindaraj A, Rao C 2000 Appl. Phys. Lett. 77 16
[4] Andriotis A N, Menon M, Srivastava D, Chernozatonskii L 2001 Phys. Rev. Lett. 87 6
[5] Andriotis A N, Menon M, Srivastava D, Chernozatonskii L 2002 Phys. Rev. B 65 16
[6] Noya E G, Srivastava D, Menon M 2009 Phys. Rev. B 79 11
[7] Wang L, Li B 2007 Phys. Rev. Lett. 99 17
[8] Starr C 1936 Physics 7 1
[9] Chien S K, Yang Y T, Chen C K 2010 Phys. Lett. A 374 48
[10] Vallabhaneni A K, Hu J, Chen Y P, Ruan X 2011 Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference Hawaii, USA, March 13-17, 2011
[11] Wu G, Li B 2007 Phys. Rev. B 76 8
[12] Bui K, Nguyen H, Cousin C, Striolo A, Papavassiliou D V 2012 The Journal of Physical Chemistry C 116 7
[13] Roberts N A, Walker D G 2011 International Journal of Thermal Sciences 133
[14] Crespi V H 1998 Phys. Rev. B 58 12
[15] Hone J, Whitney M, Piskoti C, Zettl A 1999 Phys. Rev. B 59 4
[16] Berber S, Kwon Y K, Tománek D 2000 Phys. Rev. Lett. 84 20
[17] Che J, Cagin T, William Iii A G 2000 Nanotechnology 11 65
[18] Brenner D W 1990 Phys. Rev. B 42 15
[19] Lukes J R, Zhong H 2007 Journal of heat transfer 129 705
[20] Ren C, Xu Z, Zhang W, Li Y, Zhu Z, Huai P 2010 Phys. Lett. A 374 17
[21] Yang H S, Bai G R, Thompson L J, Eastman J A 2002 Acta Materialia 50 9
[22] Kondo N, Yamamoto T, Watanabe K 2006 E-Journal of Surface Science and Nanotechnology 4
[23] Li W, Feng Y H, Zhang X X, Chen Y 2012 Acta Phys. Sin. 61 136102 (in Chinese) [李威, 冯妍卉, 张欣欣, 陈阳 2012 54 136102]
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