Theoretical concepts of unlimited-power reflectors, absorbers, and emitters with conjugately matched layers

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Valagiannopoulos, Constantinos A. Tretiakov, Sergei 2018-08-01T12:37:36Z 2018-08-01T12:37:36Z 2016-09-12
dc.identifier.citation Valagiannopoulos , C A & Tretiakov , S 2016 , ' Theoretical concepts of unlimited-power reflectors, absorbers, and emitters with conjugately matched layers ' PHYSICAL REVIEW B , vol 94 , no. 12 , 125117 , pp. 1-13 . DOI: 10.1103/PhysRevB.94.125117 en
dc.identifier.issn 1098-0121
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 0717bcef-c36d-486a-9560-e5de30b8613b
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.abstract Recently, it was shown that by using special artificial materials it is possible to ensure that all electromagnetic modes of free space are conjugately matched to the modes of a material body and, thus, all modes deliver power to the body in the most effective way. Such a fascinating feature is acquired because the conjugate matching does not concern only the propagating modes but, most importantly, is applied to all evanescent modes; in this way, all the possible ways of transferring the electromagnetic energy to the material body can be optimally exploited. However, coupling to higher-order (mostly evanescent) modes is weak and totally disappears in the limit of an infinite planar boundary. Here, we show that by properly perturbing the surface of the receiving or emitting body with, for example, randomly distributed small particles, we can open up channels for super-radiation into the far zone. The currents induced in the small particles act as secondary sources (radiation "vessels") which send the energy to travel far away from the surface and, reciprocally, receive power from far-located sources. For a particular example, we theoretically predict about 20-fold power transfer enhancement between the conjugately matched power-receiving body (as compared with the ideal black body) and far-zone sources. Reciprocally, the proposed structure radiates about 20 times more power into the far zone as compared with the same source over a perfect reflector. en
dc.format.extent 1-13
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW B en
dc.relation.ispartofseries Volume 94, issue 12 en
dc.rights openAccess en
dc.subject.other Electronic, Optical and Magnetic Materials en
dc.subject.other Condensed Matter Physics en
dc.subject.other 114 Physical sciences en
dc.title Theoretical concepts of unlimited-power reflectors, absorbers, and emitters with conjugately matched layers en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Nazarbayev University
dc.contributor.department Department of Radio Science and Engineering
dc.subject.keyword Electronic, Optical and Magnetic Materials
dc.subject.keyword Condensed Matter Physics
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201808014064
dc.identifier.doi 10.1103/PhysRevB.94.125117
dc.type.version publishedVersion

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