scholarly journals Characterization of vertically oriented carbon nanotube arrays as high-temperature thermal interface materials

Author(s):  
Menglong Hao ◽  
Zhengxing Huang ◽  
Kimberly R. Saviers ◽  
Guoping Xiong ◽  
Stephen L. Hodson ◽  
...  
2015 ◽  
Vol 54 (9) ◽  
pp. 095102 ◽  
Author(s):  
Nuri Na ◽  
Kei Hasegawa ◽  
Xiaosong Zhou ◽  
Mizuhisa Nihei ◽  
Suguru Noda

2019 ◽  
Vol 11 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Guangjie Yuan ◽  
Haohao Li ◽  
Bo Shan ◽  
Johan Liu

As the feature size of integrated circuit devices is shrinking to sub-7 nm node, the chip power dissipation significantly increases and mainly converted to the heat. Vertically Aligned Carbon Nanotube arrays (VACNTs) have a large number of outstanding properties, such as high axial thermal conductivity, low expansion coefficient, light-weight, anti-aging, and anti-oxidation. With a dramatic increment of chip temperature, VACNTs and their composites will be the promising materials as Thermal Interface Materials (TIMs), especially due to their high thermal conductivity. In this review, the synthesis, transfer and potential applications of VACNTs have been mentioned. Thermal Chemical Vapor Deposition (TCVD) has been selected for the synthesis of millimeter-scale VACNTs. After that, they are generally transferred to the target substrate for the application of TIMs in the electronics industry, using the solder transfer method. Besides, the preparation and potential applications of VACNTs-based composites are also summarized. The gaps of VACNTs are filled by the metals or polymers to replace the low thermal conductivity in the air and make them free-standing composites films. Compared with VACNTs- metal composites, VACNTs-polymer composites will be more suitable for the next generation TIMs, due to their lightweight, low density and good mechanical properties.


2020 ◽  
Vol 24 (2 Part A) ◽  
pp. 745-756
Author(s):  
Bo Shi ◽  
Han Zhang ◽  
Jin Zhang

The vertical carbon nanotube arrays (VACNT), as a result of its flexibility and axial high thermal conductivity, exert a huge potential and play an increasingly important role in thermal interface materials. This paper proposed a model which can predict the contact thermal resistance of VACNT. The contact thermal resistance of VACNT under different pressures is calculated and compared with the experimental data. Also, the effect of variations in the surface roughness and VACNT parameters on the contact thermal resistance is investigated. Results show that the theoretical results are in good agreement with the experimental data. The contact thermal resistance is composed of interfacial thermal resistance, constriction thermal resistance, and VACNT resistance. Among which the interfacial thermal resistance is the major thermal resistance. The variations in VACNT length and diameter can change the bending degree of VACNT under the same pressure, which presents important implications on contact thermal resistance and can be used to optimize the contact thermal resistance of VACNT. The surface roughness exerts little effect on contact thermal resistance.


2014 ◽  
Vol 5 (2) ◽  
pp. 81-94
Author(s):  
Robert Sayer ◽  
Stephen Hodson ◽  
Timothy Koehler ◽  
Robert Cordova ◽  
Timothy Marinone ◽  
...  

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1890
Author(s):  
Monika Rdest ◽  
Dawid Janas

This perspective article describes the application opportunities of carbon nanotube (CNT) films for the energy sector. Up to date progress in this regard is illustrated with representative examples of a wide range of energy management and transformation studies employing CNT ensembles. Firstly, this paper features an overview of how such macroscopic networks from nanocarbon can be produced. Then, the capabilities for their application in specific energy-related scenarios are described. Among the highlighted cases are conductive coatings, charge storage devices, thermal interface materials, and actuators. The selected examples demonstrate how electrical, thermal, radiant, and mechanical energy can be converted from one form to another using such formulations based on CNTs. The article is concluded with a future outlook, which anticipates the next steps which the research community will take to bring these concepts closer to implementation.


Carbon ◽  
2019 ◽  
Vol 145 ◽  
pp. 725-733 ◽  
Author(s):  
Lin Qiu ◽  
Pu Guo ◽  
Qinyu Kong ◽  
Chong Wei Tan ◽  
Kun Liang ◽  
...  

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