Super-thin cloaks mediated by spoof surface plasmons |
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Authors: | Jiafu Wang Shaobo Qu Zhuo Xu Hua Ma Xinhua Wang Daqing Huang Yongfeng Li |
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Affiliation: | 1. College of Science, Air Force Engineering University, Xi’an, 710051 Shaanxi, China;2. Electronic Materials Research Laboratory, Xi’an Jiaotong University, Xi’an, 710049 Shaanxi, China;3. Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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Abstract: | 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. |
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