Ultra-Low Thermal Conductivity in W/Al2O3 Nanolaminates

R. M. Costescu, D. G. Cahill, F. H. Fabreguette, Z. A. Sechrist, S. M. George

Research output: Contribution to journalArticle

Abstract

Atomic layer deposition and magnetron sputter deposition were used to synthesize thin-film multilayers of W/Al2O3. 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.

Original languageEnglish (US)
Pages (from-to)989-990
Number of pages2
JournalScience
Volume303
Issue number5660
DOIs
StatePublished - Feb 13 2004

ASJC Scopus subject areas

  • General

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    Costescu, R. M., Cahill, D. G., Fabreguette, F. H., Sechrist, Z. A., & George, S. M. (2004). Ultra-Low Thermal Conductivity in W/Al2O3 Nanolaminates. Science, 303(5660), 989-990. https://doi.org/10.1126/science.1093711