Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials
The interfacial thermal transport (ITT) between vertically aligned carbon nanotube (VACNT) arrays and heat sink is the dominant barrier blocking the path towards practical application of VACNT arrays as nano-thermal interface materials (nTIMs). Although developing VACNT arrays with homogeneous heigh...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147093 |
| _version_ | 1826126092708085760 |
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| author | Qiu, Lin Guo, Pu Kong, Qinyu Tan, Chong Wei Liang, Kun Wei, Jun Tey, Ju Nie Feng, Yanhui Zhang, Xinxin Tay, Beng Kang |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Qiu, Lin Guo, Pu Kong, Qinyu Tan, Chong Wei Liang, Kun Wei, Jun Tey, Ju Nie Feng, Yanhui Zhang, Xinxin Tay, Beng Kang |
| author_sort | Qiu, Lin |
| collection | NTU |
| description | The interfacial thermal transport (ITT) between vertically aligned carbon nanotube (VACNT) arrays and heat sink is the dominant barrier blocking the path towards practical application of VACNT arrays as nano-thermal interface materials (nTIMs). Although developing VACNT arrays with homogeneous heights and larger diameters could lower the thermal contact resistance between the arrays and heat sink (R c ), little effect is achieved at present stage. Here, by using Plasma Enhanced Chemical Vapor Deposition approach, we attain DLC/TiN-coated VACNT arrays, which gives up to 50 times reduction in R c from 15 mm 2 K/W to 0.3 mm 2 K/W. Microscopic morphological analyses confirm that the remarkably expanded contact area brought by coatings can promote the ITT and also retain the high phonon transmission rate within individual CNTs. These novel structures are significantly in favor of fulfilling a nTIM function. It is also intriguing to note that R c is no longer linearly dependent on CNT height variations once CNT diameters become large enough. This indicates that the contact area with heat sink is dominant in influencing R c instead of the surface roughness. The above findings fuel future effort towards industrial realization of high-performance VACNT array-based nTIM and high-efficiency thermal management in microelectronic and nanoenergy fields. |
| first_indexed | 2024-10-01T06:47:04Z |
| format | Journal Article |
| id | ntu-10356/147093 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:47:04Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1470932021-03-22T06:47:03Z Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials Qiu, Lin Guo, Pu Kong, Qinyu Tan, Chong Wei Liang, Kun Wei, Jun Tey, Ju Nie Feng, Yanhui Zhang, Xinxin Tay, Beng Kang School of Electrical and Electronic Engineering Center for Micro/Nano-electronics (NOVITAS) Singapore Institute of Manufacturing Technology Engineering::Electrical and electronic engineering Diamond Like Carbon Coating Nano-thermal Interface Materials The interfacial thermal transport (ITT) between vertically aligned carbon nanotube (VACNT) arrays and heat sink is the dominant barrier blocking the path towards practical application of VACNT arrays as nano-thermal interface materials (nTIMs). Although developing VACNT arrays with homogeneous heights and larger diameters could lower the thermal contact resistance between the arrays and heat sink (R c ), little effect is achieved at present stage. Here, by using Plasma Enhanced Chemical Vapor Deposition approach, we attain DLC/TiN-coated VACNT arrays, which gives up to 50 times reduction in R c from 15 mm 2 K/W to 0.3 mm 2 K/W. Microscopic morphological analyses confirm that the remarkably expanded contact area brought by coatings can promote the ITT and also retain the high phonon transmission rate within individual CNTs. These novel structures are significantly in favor of fulfilling a nTIM function. It is also intriguing to note that R c is no longer linearly dependent on CNT height variations once CNT diameters become large enough. This indicates that the contact area with heat sink is dominant in influencing R c instead of the surface roughness. The above findings fuel future effort towards industrial realization of high-performance VACNT array-based nTIM and high-efficiency thermal management in microelectronic and nanoenergy fields. Ministry of Education (MOE) Nanyang Technological University This research receives financial support from Projects 51876008 and 51876007 supported by National Natural Science Foundation of China, the Fundamental Research Funds for the Central Universities from University of Science and Technology Beijing (L. Qiu), MOE2014-T2-2-105, SIM Tech-NTU PA RCA_16/174 and COE Research Grant (M4081666), Singapore (B.K. Tay). The authors are also grateful to Dr. Luo Jun from Beijing Normal University for his useful help on coating deposition. 2021-03-22T06:47:03Z 2021-03-22T06:47:03Z 2019 Journal Article Qiu, L., Guo, P., Kong, Q., Tan, C. W., Liang, K., Wei, J., Tey, J. N., Feng, Y., Zhang, X. & Tay, B. K. (2019). Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials. Carbon, 145, 725-733. https://dx.doi.org/10.1016/j.carbon.2019.01.085 0008-6223 0000-0003-3389-3741 0000-0002-5635-9560 0000-0002-2156-9808 0000-0002-3776-3648 https://hdl.handle.net/10356/147093 10.1016/j.carbon.2019.01.085 2-s2.0-85061342936 145 725 733 en MOE2014-T2-2-105 SIM Tech-NTU PA RCA_16/174 M4081666 Carbon © 2019 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Diamond Like Carbon Coating Nano-thermal Interface Materials Qiu, Lin Guo, Pu Kong, Qinyu Tan, Chong Wei Liang, Kun Wei, Jun Tey, Ju Nie Feng, Yanhui Zhang, Xinxin Tay, Beng Kang Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title | Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title_full | Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title_fullStr | Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title_full_unstemmed | Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title_short | Coating-boosted interfacial thermal transport for carbon nanotube array nano-thermal interface materials |
| title_sort | coating boosted interfacial thermal transport for carbon nanotube array nano thermal interface materials |
| topic | Engineering::Electrical and electronic engineering Diamond Like Carbon Coating Nano-thermal Interface Materials |
| url | https://hdl.handle.net/10356/147093 |
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