Breaking the black-body limit with resonant surfaces

Constantinos Valagiannopoulos, Constantin R. Simovski, Sergei A. Tretyakov

Research output: Contribution to journalArticle

Abstract

The speed with which electromagnetic energy can be wirelessly transferred from a source to the user is a crucial indicator for the performance of a large number of electronic and photonic devices. We expect that energy transfer can be enhanced using special materials. In this paper, we determine the constituent parameters of a medium which can support theoretically infinite energy concentration close to its boundary; such a material combines properties of Perfectly Matched Layers (PML) and Double-Negative (DNG) media. It realizes conjugate matching with free space for every possible mode including, most importantly, all evanescent modes; we call this medium Conjugate Matched Layer (CML). Sources located outside such layer deliver power to the conjugate-matched body exceptionally effectively, impressively overcoming the black-body absorption limit which takes into account only propagating waves. We also expand this near-field concept related to the infinitely fast absorption of energy along the air-medium interface to enhance the far-field radiation. This becomes possible with the use of small particles randomly placed along the boundary; the induced currents due to the extremely high-amplitude resonating fields can play the role of emission ''vessels'', by sending part of the theoretically unlimited near-field energy far away from the CML structure.

Original languageEnglish
Article number5
JournalEPJ Applied Metamaterials
Volume4
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Photonic devices
Induced currents
Energy absorption
Electromagnetic waves
Energy transfer
near fields
Radiation
perfectly matched layers
energy
Air
vessels
far fields
energy transfer
photonics
electromagnetism
air
radiation
electronics

Keywords

  • Black-body limit
  • Conjugate matching
  • Perfectly Matched Layer (PML)
  • Wireless power transfer

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Breaking the black-body limit with resonant surfaces. / Valagiannopoulos, Constantinos; Simovski, Constantin R.; Tretyakov, Sergei A.

In: EPJ Applied Metamaterials, Vol. 4, 5, 01.01.2017.

Research output: Contribution to journalArticle

Valagiannopoulos, Constantinos ; Simovski, Constantin R. ; Tretyakov, Sergei A. / Breaking the black-body limit with resonant surfaces. In: EPJ Applied Metamaterials. 2017 ; Vol. 4.
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