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      https://www.ias.ac.in/article/fulltext/pram/091/01/0001

    • Keywords

       

      Cloaking; random medium; diffuse photon density waves; scattering

    • Abstract

       

      Enhancement of wave-like characteristics of heavily damped diffuse photon density waves in a random medium by amplification can induce strongly localised resonances. These resonances can be used to either suppress or enhance scattering from an inhomogeneity in the random medium by cloaking the inhomogeneous region by a shell of random medium with the correct levels of absorption or amplification. A spherical core–shell structure consisting of a shell of a random amplifying medium is shown to enhance or suppress specific resonant modes. A shell with an absorbing random medium is also shown to suppress scattering which can also be used for cloaking the core region.

    • Author Affiliations

       

      LALRUATFELA RENTHLEI1 S ANANTHA RAMAKRISHNA1 HARSHAWARDHAN WANARE1

      1. Department of Physics, Indian Institute of Technology, Kanpur 208 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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