Near-field radiative heat transfer between metasurfaces: A full-wave study based on two-dimensional grooved metal plates
2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 12, 125431Article in journal (Refereed) Published
Metamaterials possess artificial bulk and surface electromagnetic states. Tamed dispersion properties of surface waves allow one to achieve a controllable super-Planckian radiative heat transfer (RHT) process between two closely spaced objects. We numerically demonstrate enhanced RHT between two two-dimensional grooved metal plates by a full-wave scattering approach. The enhancement originates from both transverse-magnetic spoof surface-plasmon polaritons and a series of transverse-electric bonding-and anti-bonding-waveguide modes at surfaces. The RHT spectrum is frequency selective and highly geometrically tailorable. Our simulation also reveals thermally excited nonresonant surface waves in constituent metallic materials may play a prevailing role for RHT at an extremely small separation between two metal plates, rendering metamaterial modes insignificant for the energy-transfer process.
Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 94, no 12, 125431
IdentifiersURN: urn:nbn:se:kth:diva-193987DOI: 10.1103/PhysRevB.94.125431ISI: 000383865400009OAI: oai:DiVA.org:kth-193987DiVA: diva2:1038340
FunderSwedish Research Council, 621-2011-4526
QC 201610182016-10-182016-10-142016-11-07Bibliographically approved