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Near-field radiative heat transfer between metasurfaces: A full-wave study based on two-dimensional grooved metal plates
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.ORCID iD: 0000-0002-0111-9009
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.ORCID iD: 0000-0002-3368-9786
2016 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 94, no 12, 125431Article in journal (Refereed) Published
Abstract [en]

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
Keyword [en]
Nanostructures, Nanoscale
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-193987DOI: 10.1103/PhysRevB.94.125431ISI: 000383865400009OAI: oai:DiVA.org:kth-193987DiVA: diva2:1038340
Funder
Swedish Research Council, 621-2011-4526
Note

QC 20161018

Available from: 2016-10-18 Created: 2016-10-14 Last updated: 2016-11-07Bibliographically approved
In thesis
1. Near-Field Radiative Heat Transfer between Plasmonic Nanostructures
Open this publication in new window or tab >>Near-Field Radiative Heat Transfer between Plasmonic Nanostructures
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Radiative heat transfer (RHT) due to coupled electromagnetic near field scan significantly exceed that dictated by Planck’s law. Understanding such phenomenon is not only of fundamental scientific interest, but also relevant to a broad range of applications especially connected to nanotechnologies.This dissertation elaborates, through a scattering approach based on the rigorous coupled wave analysis method, how plasmonic nanostructures can tame the near-field RHT between two bodies. The transmission-factor spectra are corroborated by photonic band diagrams computed using a finite element method. The main work begins by showing that the phenomenon of spoofsurface plasmon polariton (SSPP) guided on grooved metal surfaces can play a similar role as surface phonon polariton in enhancing the RHT between two closely placed plates. Since dispersions of SSPPs especially their resonance frequencies can be engineered through geometrical surface profiling,one has great freedom in tailoring spectral properties of near-field RHT. Further enhancement of RHT can be achieved through techniques like filling of dielectrics in grooves or deploying supercells. A thorough study of RHT betweentwo 1D or 2D grooved metal plates confirms super-Planckian RHT at near-field limit, with 2D grooved metal plates exhibiting a superior frequency selectivity. We also present RHT with a more exotic type of plasmonic nanostructures consisting of profile-patterned hyperbolic metamaterial arrays, and show that with such plasmonic nanostructures one can achieve an ultrabroadband super-Planckian RHT.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 84 p.
Series
TRITA-ICT, 2016:31
National Category
Condensed Matter Physics Atom and Molecular Physics and Optics Nano Technology
Research subject
Physics; Energy Technology
Identifiers
urn:nbn:se:kth:diva-195653 (URN)978-91-7729-175-6 (ISBN)
Public defence
2016-12-07, Sal C, Kistagången 16, Kista, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
Swedish Research Council, 2011-4526
Note

QC 20161111

Available from: 2016-11-11 Created: 2016-11-07 Last updated: 2016-11-11Bibliographically approved

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