Journal
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
Volume 10, Issue 4, Pages 540-546Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.photonics.2012.04.007
Keywords
Cloak; Spoof surface plasmon; Metamaterial
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Funding
- National Natural Science Foundation of China [10804130]
- National Natural Science Foundation of Shaanxi Province [2011JQ8031]
- 973 Project of Science and Technology Ministry of China [2009CB613306]
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We demonstrated the possibility of designing super-thin electromagnetic cloaks based on spoof surface plasmon (SSP). Using a metamaterial layer, incident waves can be coupled into SSP efficiently at the air/metamaterial interface. Due to the strong surface confinement of SSP, EM waves are squeezed into and propagate in deep sub-wavelength scales. Implementation of an 8.2 GHz cloak less than 1/50 the cloaking diameter was presented using split ring resonator (SRR). Excellent cloaking effect was verified by simulations. Rather than isolating objects from the background, such cloaks can drastically enhance the field intensity around the cloaked object. This is of particular importance in applications such as weak wave detection and near-field sensing. (C) 2012 Elsevier B.V. All rights reserved.
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