Thermal Conductivity in Nanoporous Gold Films during Electron-Phonon Nonequilibrium

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Journal of Nanomaterials

DOI:https://doi.org/10.1155/2008/418050· OSTI ID:1198281

Hopkins, Patrick E. ^[1]; Norris, Pamela M. ^[1]; Phinney, Leslie M. ^[2]; Policastro, Steven A. ^[3]; Kelly, Robert G. ^[3]

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1. Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904-4746, USA
2. Engineering Sciences Center, Sandia National Laboratories, Albuquerque, NM 87185, USA
3. Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904-4746, USA

The reduction of nanodevices has given recent attention to nanoporous materials due to their structure and geometry. However, the thermophysical properties of these materials are relatively unknown. In this article, an expression for thermal conductivity of nanoporous structures is derived based on the assumption that the finite size of the ligaments leads to electron-ligament wall scattering. This expression is then used to analyze the thermal conductivity of nanoporous structures in the event of electron-phonon nonequilibrium.

• Sponsoring Organization: USDOE
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1198281
• Journal Information: Journal of Nanomaterials, Journal Name: Journal of Nanomaterials Vol. 2008; ISSN 1687-4110
• Publisher: Hindawi Publishing Corporation
• Country of Publication: Egypt
• Language: English