Low interfacial thermal resistance between crossed ultra-thin carbon nanothreads

authored by: Haifei Zhan, Gang Zhang, Xiaoying Zhuang, Rabczuk Timon, Yuantong Gu
Abstract: To ensure reliable performance and lifetime of electronics, effective and efficient heat removal is essential, which relies heavily on the high thermal conductivity of the packaging substrates and thermal interface materials (TIMs). Highly conductive fillers have been commonly applied to enhance the thermal conductivity of TIMs, while the enhancement effect has been significantly impeded by the interfacial thermal resistance. This work reveals that the new type of ultra-thin carbon nanomaterial – carbon nanothreads, possess a much smaller interfacial thermal resistance (3.1 ± 0.4 × 10⁻⁹ Km²/W) between each other compared with that of the (4,0) carbon nanotubes (8.8 ± 4.6 × 10⁻⁹ Km²/W). Similar as found for carbon nanotubes, the interfacial thermal resistance decreases when the interfacial crossing angle decreases or the contact area increases. Surprisingly, both compressive and stretching interfacial distance are found to enhance the interfacial thermal conductance. It is found that different carbon nanothreads exhibit an interfacial thermal conductance between 60 and 110 pW/K, which can be remarkably enhanced by introducing interfacial cross-linkers. Combining with the ultra-thin nature of carbon nanothreads, our work suggests that carbon nanothreads can be an excellent alternative nanofillers for polymer composites with enhanced thermal conductivity.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Queensland University of Technology
A-STAR
Bauhaus-Universität Weimar
Type: Article
Journal: CARBON
Volume: 165
Pages: 216-224
No. of pages: 9
ISSN: 0008-6223
Publication date: 15.09.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Chemistry, General Materials Science
Electronic version(s): https://eprints.qut.edu.au/201860/1/Carbon2020_Haifei.pdf (Access: Open)
https://doi.org/10.1016/j.carbon.2020.04.065 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{4e7183b8edb9402e99b590aa23a0d576,
title = "Low interfacial thermal resistance between crossed ultra-thin carbon nanothreads",
abstract = "To ensure reliable performance and lifetime of electronics, effective and efficient heat removal is essential, which relies heavily on the high thermal conductivity of the packaging substrates and thermal interface materials (TIMs). Highly conductive fillers have been commonly applied to enhance the thermal conductivity of TIMs, while the enhancement effect has been significantly impeded by the interfacial thermal resistance. This work reveals that the new type of ultra-thin carbon nanomaterial – carbon nanothreads, possess a much smaller interfacial thermal resistance (3.1 ± 0.4 × 10−9 Km2/W) between each other compared with that of the (4,0) carbon nanotubes (8.8 ± 4.6 × 10−9 Km2/W). Similar as found for carbon nanotubes, the interfacial thermal resistance decreases when the interfacial crossing angle decreases or the contact area increases. Surprisingly, both compressive and stretching interfacial distance are found to enhance the interfacial thermal conductance. It is found that different carbon nanothreads exhibit an interfacial thermal conductance between 60 and 110 pW/K, which can be remarkably enhanced by introducing interfacial cross-linkers. Combining with the ultra-thin nature of carbon nanothreads, our work suggests that carbon nanothreads can be an excellent alternative nanofillers for polymer composites with enhanced thermal conductivity.",
keywords = "Carbon nanothread, Carbon nanotube, Density of states, Kapitza resistance, Molecular dynamics simulation",
author = "Haifei Zhan and Gang Zhang and Xiaoying Zhuang and Rabczuk Timon and Yuantong Gu",
note = "Funding Information: Support from the ARC Discovery Project ( DP170102861 ) and the High-Performance Computing (HPC) resources provided by the Queensland University of Technology (QUT) are gratefully acknowledged (HZ, YG, JB). This research was undertaken with the assistance of resource and services from Intersect Australia Ltd, and the National Computational Infrastructure (NCI) , which is supported by Australian Government . HZ would also like to acknowledge the support from the Start-up Fund from Queensland University of Technology . ",
year = "2020",
month = sep,
day = "15",
doi = "10.1016/j.carbon.2020.04.065",
language = "English",
volume = "165",
pages = "216--224",
journal = "CARBON",
issn = "0008-6223",
publisher = "Elsevier Ltd.",
}