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Enhanced near-field radiative heat transfer between corrugated metal plates: Role of spoof surface plasmon polaritons
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.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.ORCID iD: 0000-0002-3368-9786
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 3, 035419Article in journal (Refereed) Published
Abstract [en]

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. Martin-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.

Place, publisher, year, edition, pages
2015. Vol. 92, no 3, 035419
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-171887DOI: 10.1103/PhysRevB.92.035419ISI: 000358031300002OAI: oai:DiVA.org:kth-171887DiVA: diva2:846044
Funder
Swedish Research Council, 621-2011-4526
Note

QC 20150814

Available from: 2015-08-14 Created: 2015-08-10 Last updated: 2017-12-04Bibliographically 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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Dai, JinYan, Min

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