Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4820810
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Funding
- National Natural Science Foundation of China [50936002, 11174234, 51272215]
- National Key Scientific Program of China [2012CB921503]
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The electromagnetic behaviors of the metamaterial can be artificially controlled by changing the effective permittivity of the nearby background medium. Utilizing this fantastic feature, an ultrathin and frequency-tunable polarization rotation device, which can achieve 90(degrees) polarization rotation for a linearly polarized incident wave, is constructed via the combination of a composite chiral metamaterial and two auxiliary dielectric slabs. It shows that the operating frequency of the resulting 90 degrees-polarization rotation device can be continuously and reversibly tuned in a wide frequency range by mechanical means. The experimentally measured results are in agreement with the numerical values. (C) 2013 AIP Publishing LLC.
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