Acoustic Mismatch Model for Thermal Contact Conductance of Van Der Waals Contacts Under Static Force
Abstract
We report that Van der Waals interfaces play a major role in technology today. Thermal transport in material systems with van der Waals interfaces is mainly limited by the contact conductance. Although the effects of static force, such as pressure or the electrostatic part of hydrogen bonds, on the thermal contact conductance of van der Waals interfaces have been examined in a few studies, the focus was either on numerical simulation using techniques such as molecular dynamics or on experimental investigation. In this article, an analytical model of thermal contact conductance that accounts for the effects of static force and adhesion energy is presented. The application of static forces is found to cause a decrease in the intermolecular distance, which leads to increased interatomic forces across the interfaces and thus higher thermal conductance. The model is in good agreement with experimental data on the effect of pressure on thermal conductance collected by Gotsmann and Lantz (Nature Materials, Vol. 12, p. 59–65, 2012).
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
- OSTI Identifier:
- 1508056
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Nanoscale and Microscale Thermophysical Engineering
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 1; Journal ID: ISSN 1556-7265
- Publisher:
- Taylor & Francis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING; Van der Waals interface; phonon thermal contact resistance; phonon thermal contact conductance; hard and soft interface; thermal transport at hydrogen bonds
Citation Formats
Prasher, Ravi. Acoustic Mismatch Model for Thermal Contact Conductance of Van Der Waals Contacts Under Static Force. United States: N. p., 2017.
Web. doi:10.1080/15567265.2017.1391905.
Prasher, Ravi. Acoustic Mismatch Model for Thermal Contact Conductance of Van Der Waals Contacts Under Static Force. United States. https://doi.org/10.1080/15567265.2017.1391905
Prasher, Ravi. 2017.
"Acoustic Mismatch Model for Thermal Contact Conductance of Van Der Waals Contacts Under Static Force". United States. https://doi.org/10.1080/15567265.2017.1391905. https://www.osti.gov/servlets/purl/1508056.
@article{osti_1508056,
title = {Acoustic Mismatch Model for Thermal Contact Conductance of Van Der Waals Contacts Under Static Force},
author = {Prasher, Ravi},
abstractNote = {We report that Van der Waals interfaces play a major role in technology today. Thermal transport in material systems with van der Waals interfaces is mainly limited by the contact conductance. Although the effects of static force, such as pressure or the electrostatic part of hydrogen bonds, on the thermal contact conductance of van der Waals interfaces have been examined in a few studies, the focus was either on numerical simulation using techniques such as molecular dynamics or on experimental investigation. In this article, an analytical model of thermal contact conductance that accounts for the effects of static force and adhesion energy is presented. The application of static forces is found to cause a decrease in the intermolecular distance, which leads to increased interatomic forces across the interfaces and thus higher thermal conductance. The model is in good agreement with experimental data on the effect of pressure on thermal conductance collected by Gotsmann and Lantz (Nature Materials, Vol. 12, p. 59–65, 2012).},
doi = {10.1080/15567265.2017.1391905},
url = {https://www.osti.gov/biblio/1508056},
journal = {Nanoscale and Microscale Thermophysical Engineering},
issn = {1556-7265},
number = 1,
volume = 22,
place = {United States},
year = {Thu Nov 30 00:00:00 EST 2017},
month = {Thu Nov 30 00:00:00 EST 2017}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
First-principles Modeling of Thermal Transport in Materials: Achievements, Opportunities, and Challenges
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Figures / Tables found in this record: