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Title: Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer

Abstract

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.

Authors:
; ;  [1]
  1. School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287 (United States)
Publication Date:
OSTI Identifier:
22413056
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIELECTRIC MATERIALS; HEAT TRANSFER; INDIUM COMPOUNDS; METAMATERIALS; NANOWIRES; PERMITTIVITY; TIN OXIDES

Citation Formats

Chang, Jui-Yung, Basu, Soumyadipta, and Wang, Liping. Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer. United States: N. p., 2015. Web. doi:10.1063/1.4907581.
Chang, Jui-Yung, Basu, Soumyadipta, & Wang, Liping. Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer. United States. https://doi.org/10.1063/1.4907581
Chang, Jui-Yung, Basu, Soumyadipta, and Wang, Liping. 2015. "Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer". United States. https://doi.org/10.1063/1.4907581.
@article{osti_22413056,
title = {Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer},
author = {Chang, Jui-Yung and Basu, Soumyadipta and Wang, Liping},
abstractNote = {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.},
doi = {10.1063/1.4907581},
url = {https://www.osti.gov/biblio/22413056}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 5,
volume = 117,
place = {United States},
year = {Sat Feb 07 00:00:00 EST 2015},
month = {Sat Feb 07 00:00:00 EST 2015}
}