Open AccessDegradation of cloaking by two closely neighboring cloaks
Author(s) -
Lin Gan,
Zhiyuan Li
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.012262
Subject(s) - cloaking , cloak , scattering , optics , physics , electromagnetic radiation , electromagnetic field , metamaterial , acoustics , quantum mechanics
Cloaking can prevent a scattering object from detection by electromagnetic waves as it can significantly reduce the scattering cross section of the object. In this work we show that when two cloaks are placed in close neighborhood, the interaction will greatly enhance the perturbation of near field and significantly increase the scattering cross section compared with a single cloak. This means that the cloaking functionality may strongly degrade when two or more cloaks come close to each other. This offers a route to break down electromagnetic cloaking.