Breaking the black-body limit with resonant surfaces

Tutkimustuotos: Lehtiartikkeli

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

julkaisussa: EPJ Applied Metamaterials, Vuosikerta 4, 5, 2017.

Tutkimustuotos: Lehtiartikkeli

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Bibtex - Lataa

@article{2ddd49ef2cfd4a3f8bb28b236c06257f,
title = "Breaking the black-body limit with resonant surfaces",
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.",
keywords = "Black-body limit, Conjugate matching, Perfectly Matched Layer (PML), Wireless power transfer",
author = "Valagiannopoulos, {Constantinos A.} and Simovski, {Constantin R.} and Tretyakov, {Sergei A.}",
year = "2017",
doi = "10.1051/epjam/2017002",
language = "English",
volume = "4",
journal = "EPJ Applied Metamaterials",
issn = "2272-2394",
publisher = "EDP SCIENCES",

}

RIS - Lataa

TY - JOUR

T1 - Breaking the black-body limit with resonant surfaces

AU - Valagiannopoulos, Constantinos A.

AU - Simovski, Constantin R.

AU - Tretyakov, Sergei A.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Black-body limit

KW - Conjugate matching

KW - Perfectly Matched Layer (PML)

KW - Wireless power transfer

U2 - 10.1051/epjam/2017002

DO - 10.1051/epjam/2017002

M3 - Article

VL - 4

JO - EPJ Applied Metamaterials

JF - EPJ Applied Metamaterials

SN - 2272-2394

M1 - 5

ER -

ID: 13707041