Using atomic layer deposited tungsten to increase thermal conductivity of a packed bed
Abstract
This paper investigated the effective thermal conductivity (keff) of packed-beds that contained porous particles with nanoscale tungsten (W) films of different thicknesses formed by atomic layer deposition (ALD). A continuous film on the particles is vital towards increasing keff of the packed beds. For example, the keff of an alumina packed bed was increased by three times after an ~8-nm continuous W film with 20 cycles of W ALD, whereas keff was decreased on a polymer packed bed with discontinuous, evenly dispersed W-islands due to nanoparticle scattering of phonons. For catalysts, understanding the thermal properties of these packed beds is essential for developing thermally conductive supports as alternatives to structured supports.
- Authors:
-
[1]
- Univ. of Colorado, Boulder, CO (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1342071
- Alternate Identifier(s):
- OSTI ID: 1226735
- Report Number(s):
- LLNL-JRNL-665861
Journal ID: ISSN 0003-6951
- Grant/Contract Number:
- AC52-07NA27344; AR0000291
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 106; Journal Issue: 15; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Van Norman, Staci A., Tringe, Joseph W., Sain, John D., Yang, Ronggui, Falconer, John L., and Weimer, Alan W. Using atomic layer deposited tungsten to increase thermal conductivity of a packed bed. United States: N. p., 2015.
Web. doi:10.1063/1.4917309.
Van Norman, Staci A., Tringe, Joseph W., Sain, John D., Yang, Ronggui, Falconer, John L., & Weimer, Alan W. Using atomic layer deposited tungsten to increase thermal conductivity of a packed bed. United States. https://doi.org/10.1063/1.4917309
Van Norman, Staci A., Tringe, Joseph W., Sain, John D., Yang, Ronggui, Falconer, John L., and Weimer, Alan W. Mon .
"Using atomic layer deposited tungsten to increase thermal conductivity of a packed bed". United States. https://doi.org/10.1063/1.4917309. https://www.osti.gov/servlets/purl/1342071.
@article{osti_1342071,
title = {Using atomic layer deposited tungsten to increase thermal conductivity of a packed bed},
author = {Van Norman, Staci A. and Tringe, Joseph W. and Sain, John D. and Yang, Ronggui and Falconer, John L. and Weimer, Alan W.},
abstractNote = {This paper investigated the effective thermal conductivity (keff) of packed-beds that contained porous particles with nanoscale tungsten (W) films of different thicknesses formed by atomic layer deposition (ALD). A continuous film on the particles is vital towards increasing keff of the packed beds. For example, the keff of an alumina packed bed was increased by three times after an ~8-nm continuous W film with 20 cycles of W ALD, whereas keff was decreased on a polymer packed bed with discontinuous, evenly dispersed W-islands due to nanoparticle scattering of phonons. For catalysts, understanding the thermal properties of these packed beds is essential for developing thermally conductive supports as alternatives to structured supports.},
doi = {10.1063/1.4917309},
journal = {Applied Physics Letters},
number = 15,
volume = 106,
place = {United States},
year = {Mon Apr 13 00:00:00 EDT 2015},
month = {Mon Apr 13 00:00:00 EDT 2015}
}
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