Change search
ReferencesLink to record
Permanent link

Direct link
Near-Field Radiative Heat Transfer between Plasmonic Nanostructures
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
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: urn:nbn:se:kth:diva-195653ISBN: 978-91-7729-175-6OAI: oai:DiVA.org:kth-195653DiVA: diva2:1044858
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
List of papers
1. Enhanced near-field radiative heat transfer between corrugated metal plates: Role of spoof surface plasmon polaritons
Open this publication in new window or tab >>Enhanced near-field radiative heat transfer between corrugated metal plates: Role of spoof surface plasmon polaritons
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.

National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-171887 (URN)10.1103/PhysRevB.92.035419 (DOI)000358031300002 ()
Funder
Swedish Research Council, 621-2011-4526
Note

QC 20150814

Available from: 2015-08-14 Created: 2015-08-10 Last updated: 2016-11-07Bibliographically approved
2. Radiative heat transfer between two dielectric-filled metal gratings
Open this publication in new window or tab >>Radiative heat transfer between two dielectric-filled metal gratings
2016 (English)In: PHYSICAL REVIEW B, ISSN 2469-9950, Vol. 93, no 15, 155403Article in journal (Refereed) Published
Abstract [en]

Nanoscale surface corrugation is known to be able to drastically enhance radiative heat transfer between two metal plates. Here we numerically calculate the radiative heat transfer between two dielectric-filled metal gratings at dissimilar temperatures based on a scattering approach. It is demonstrated that, compared to unfilled metal gratings, the heat flux for a fixed geometry can be further enhanced, by up to 650% for the geometry separated by a vacuum gap of g = 1 mu m and temperature values concerned in our study. The enhancement in radiative heat transfer is found to depend on refractive index of the filling dielectric, the specific grating temperatures, and naturally the gap size between the two gratings. The enhancement can be understood through examining the transmission factor spectra, especially the spectral locations of the spoof surface plasmon polariton modes. Of more practical importance, it's shown that the radiative heat flux can exceed that between two planar SiC plates with same thickness, separation, and temperature settings over a wide temperature range. This reaffirms that one can harness rich electromagnetic modal properties in nanostructured materials for efficient thermal management at nanoscale.

National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-185983 (URN)10.1103/PhysRevB.93.155403 (DOI)000373569000003 ()2-s2.0-84963747850 (ScopusID)
Note

QC 20160509

Available from: 2016-05-09 Created: 2016-04-29 Last updated: 2016-11-07Bibliographically approved
3. Near-field radiative heat transfer between metasurfaces: A full-wave study based on two-dimensional grooved metal plates
Open this publication in new window or tab >>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
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
Keyword
Nanostructures, Nanoscale
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-193987 (URN)10.1103/PhysRevB.94.125431 (DOI)000383865400009 ()
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
4. Ultrabroadband Super-Planckian Radiative Heat Transfer with Profile-Patterned Hyperbolic Metamaterial
Open this publication in new window or tab >>Ultrabroadband Super-Planckian Radiative Heat Transfer with Profile-Patterned Hyperbolic Metamaterial
(English)Manuscript (preprint) (Other academic)
Keyword
Super-Planckian Radiation
National Category
Physical Sciences
Research subject
Physics
Identifiers
urn:nbn:se:kth:diva-195651 (URN)
Funder
Swedish Research Council, 621-2011-4526
Note

QC 20161111

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

Open Access in DiVA

fulltext(7044 kB)89 downloads
File information
File name FULLTEXT01.pdfFile size 7044 kBChecksum SHA-512
3b5fe608cc74eabcdca12216fae7ce353d61e9e9885b0e6052aea2ce8cc6668ea772cf5363adc537120e7e22039b6e4ea28b80735f264a53570f8cdc3a0dd5ea
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Dai, Jin
By organisation
Optics and Photonics, OFO
Condensed Matter PhysicsAtom and Molecular Physics and OpticsNano Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 89 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 331 hits
ReferencesLink to record
Permanent link

Direct link