Open Access
Review
Issue
EPJ Applied Metamaterials
Volume 1, 2014
Article Number 6
Number of page(s) 16
DOI https://doi.org/10.1051/epjam/2014006
Published online 24 December 2014

© C. Zhao et al., Published by EDP Sciences, 2014

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.