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Enhanced near-field...
Enhanced near-field radiative heat transfer between corrugated metal plates : role of spoof surface plasmon polaritons
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- Dai, J. (author)
- Department of Materials and Nano Physics, School of Information and Communication Technology, KTH-Royal Institute of Technology. Kista, Sweden
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- Dyakov, S. A. (author)
- Department of Materials and Nano Physics, School of Information and Communication Technology, KTH-Royal Institute of Technology, Kista, Sweden
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- Yan, Max (author)
- Department of Materials and Nano Physics, School of Information and Communication Technology, KTH-Royal Institute of Technology, Kista, Sweden
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Department of Materials and Nano Physics, School of Information and Communication Technology, KTH-Royal Institute of Technology Kista, Sweden Department of Materials and Nano Physics, School of Information and Communication Technology, KTH-Royal Institute of Technology, Kista, Sweden (creator_code:org_t)
- 2015-07-17
- 2015
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 92:3
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We demonstrate with the finite-difference time-domain method that radiative heat transfer between two parallel gold plates can be significantly enhanced by engraving periodic grooves with a subwavelength width on the plate surfaces. The enhancement increases with a decrease in the separation distance at near-field regime and it can be further efficiently improved by having a supercell with multiple grooves with different depths. We attribute this near-field enhancement to coupling of thermally excited spoof surface plasmon polaritons, a type of artificial surface wave inherent to structured metal surfaces [J. B. Pendry, L. Mart´ın-Moreno, and F. J. Garcia-Vidal, Science 305, 847 (2004)]. The frequency-dependent contribution to the heat transfer, or transmission-factor spectrum, is confirmed by calculating the dispersion relation of guided modes by the two parallel corrugated plates through a finite-element method. Especially, the photonic density of states derived from the dispersion relation is found to have excellent agreement to the transmission-factor spectrum.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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