We investigate near-field radiative heat transfer between Indium Tin Oxide (ITO) nanowire arrays which behave as type 1 and 2 hyperbolic metamaterials. Using spatial dispersion dependent effective medium theory to model the dielectric function of the nanowires, the impact of filling fraction on the heat transfer is analyzed. Depending on the filling fraction, it is possible to achieve both types of hyperbolic modes. At 150 nm vacuum gap, the heat transfer between the nanowires with 0.5 filling fraction can be 11 times higher than that between two bulk ITOs. For vacuum gaps less than 150 nm the heat transfer increases as the filling fraction decreases. Results obtained from this study will facilitate applications of ITO nanowires as hyperbolic metamaterials for energy systems.
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- Indium Tin Oxide Nanowires as Hyperbolic Metamaterials for Near-Field Radiative Heat Transfer
- Chang, Jui-Yung (Author)
- Basu, Soumyadipta (Author)
- Wang, Liping (Author)
- Ira A. Fulton Schools of Engineering (Contributor)
- Digital object identifier: 10.1063/1.4907581
- Identifier TypeInternational standard serial numberIdentifier Value0272-4944
- Copyright 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. along with the following message: The following article appeared in JOURNAL OF APPLIED PHYSICS 117, 5 (2015) and may be found at http://dx.doi.org/10.1063/1.4907581, opens in a new window
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Chang, Jui-Yung, Basu, Soumyadipta, & Wang, Liping (2015). Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer. JOURNAL OF APPLIED PHYSICS, 117, 054309. http://dx.doi.org/10.1063/1.4907581