Ultra-Low Thermal Conductivity in W/Al 2 O 3 Nanolaminates
Abstract
Atomic layer deposition and magnetron sputter deposition were used to synthesize thin-film multilayers of W/Al 2 O 3 . With individual layers only a few nanometers thick, the high interface density produced a strong impediment to heat transfer, giving rise to a thermal conductivity of ∼0.6 watts per meter per kelvin. This result suggests that high densities of interfaces between dissimilar materials may provide a route for the production of thermal barriers with ultra-low thermal conductivity.
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The thermal conductivity of superlattices and nanolaminates has been extensively characterized using TDTR over the last 15 years.
“The thermal conductivity of superlattices and nanolaminates 27, 59, 78, 79, 123, 132-138 (see Figure 6(b) for an example) has been extensively characterized using TDTR over the last 15 years.”
From Tutorial: Time-domain thermoreflectance (TDTR) for thermal property characterization of bulk and thin film materials (2018) · cites this paper as [79]
A higher interface density generally reduces the Kz of superlattices due to the interface thermal resistance introduced by the periodic boundaries.
“A higher interface density generally reduces the Kz of superlattices (see Figure 6(c)) due to the interface thermal resistance introduced by the periodic boundaries. 79, 137”
From Tutorial: Time-domain thermoreflectance (TDTR) for thermal property characterization of bulk and thin film materials (2018) · cites this paper as [79]
Cites
Kapitza conductance and heat flow between solids at temperatures from 50 to 300 K
Stoner, R. J., & Maris, H. J. (1993) · Physical Review B · doi:10.1103/physrevb.48.16373 · Cited by 646 · see citing works
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Coherent Phonon Heat Conduction in Superlattices
Luckyanova, M. N., Garg, J., Esfarjani, K., Jandl, A., Bulsara, M. T., Schmidt, A. J., Minnich, A. J., Chen, S., Dresselhaus, M. S., Ren, Z., et al. (2012) · Science · doi:10.1126/science.1225549 · Cited by 630 · see citing works
Jiang, P., Qian, X., & Yang, R. (2018) · Journal of Applied Physics · doi:10.1063/1.5046944 · Cited by 424 · see citing works
Thermal conductance of metal-metal interfaces
Gundrum, B. C., Cahill, D. G., & Averback, R. S. (2005) · Physical Review B · doi:10.1103/physrevb.72.245426 · Cited by 417 · see citing works
Self-citationLiu, J., Yoon, B., Kuhlmann, E., Tian, M., Zhu, J., George, S. M., Lee, Y.-C., & Yang, R. (2013) · Nano Letters · doi:10.1021/nl403244s · Cited by 105 · see citing works
Self-citationJiang, P., Huang, B., & Koh, Y. K. (2016) · Review of Scientific Instruments · doi:10.1063/1.4954969 · Cited by 66 · see citing works
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- Authors
- Costescu, R. M., Cahill, D. G., Fabreguette, F. H., Sechrist, Z. A., & George, S. M.
- Affiliations
- University of Illinois Urbana-Champaign (US)
- Corresponding author
- Cahill, D. G.
- Venue
- Science
- Published
- 2004-02-13
- Volume
- 303
- Issue
- 5660
- Pages
- 989-990
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2019414150
- Cited by
- 353
- References
- 1
- Citations by year
- 2026: 5 · 2025: 9 · 2024: 7 · 2023: 7 · 2022: 20 · 2021: 18 · 2020: 21 · 2019: 15 · 2018: 24 · 2017: 15 · 2016: 23 · 2015: 28 · 2014: 18 · 2013: 28 · 2012: 19
- FWCI
- 6.87
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
- Physical Sciences › Engineering › Mechanics of Materials › Metal and Thin Film Mechanics
- Physical Sciences › Engineering › Civil and Structural Engineering › Thermal Radiation and Cooling Technologies
- Keywords
- tungsten, alumina, thermal barrier coatings, interface scattering, heat transfer, atomic layer deposition, magnetron sputtering, multilayer films, thermal insulation
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