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EPJ Applied Metamaterials
Volume 4, 2017
Article Number 1
Number of page(s) 8
Published online 13 January 2017

© K.V. Sreekanth et al., Published by EDP Sciences, 2017

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This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.