Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4902330
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Funding
- National Natural Science Foundation of China [61201083, 61275094, U1231201, 61411130152]
- China Postdoctoral Science Foundation [2012M511171, 2013T60487]
- Special Foundation for Harbin Young Scientists [2012RFLXG030]
- Fundamental Research Funds for the Central Universities
- 111 Project [B13015]
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We show multi-band coherent perfect absorption (CPA) in simple bilayered asymmetrically split ring metamaterials. The selectivity of absorption can be accomplished by separately excited electric and magnetic modes in a standing wave formed by two coherent counterpropagating beams. In particular, each CPA can be completely switched on/off by the phase of a second coherent wave. We propose a practical scheme for realizing multi-band coherent perfect absorption of 100% that is allowed to work from microwave to optical frequency. (C) 2014 AIP Publishing LLC.
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