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

Jui Yung Chang, Soumyadipta Basu, Liping Wang

Research output: Contribution to journalArticle

15 Citations (Scopus)

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 150nm 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 150nm 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.

Original languageEnglish (US)
Article number054309
JournalJournal of Applied Physics
Volume117
Issue number5
DOIs
StatePublished - Feb 7 2015

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radiative heat transfer
indium oxides
tin oxides
near fields
nanowires
heat transfer
vacuum
ITO (semiconductors)
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Indium tin oxide nanowires as hyperbolic metamaterials for near-field radiative heat transfer. / Chang, Jui Yung; Basu, Soumyadipta; Wang, Liping.

In: Journal of Applied Physics, Vol. 117, No. 5, 054309, 07.02.2015.

Research output: Contribution to journalArticle

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