Cloaking through cancellation of diffusive wave scattering

Mohamed Farhat, P. Y. Chen, S. Guenneau, Hakan Bagci, Khaled N. Salama, A. Alù

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A new cloaking mechanism, which makes enclosed objects invisible to diffusive photon density waves, is proposed. First, diffusive scattering from a basic core-shell geometry, which represents the cloaked structure, is studied. The conditions of scattering cancellation in a quasi-static scattering regime are derived. These allow for tailoring the diffusivity constant of the shell enclosing the object so that the fields scattered from the shell and the object cancel each other. This means that the photon flow outside the cloak behaves as if the cloaked object were not present. Diffusive light invisibility may have potential applications in hiding hot spots in infrared thermography or tissue imaging. © 2016 The Author(s) Published by the Royal Society. All rights reserved.
Original languageEnglish (US)
Pages (from-to)20160276
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Science
Issue number2192
StatePublished - Aug 10 2016

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