Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 98, Issue 3, Pages 643-649Publisher
SPRINGER
DOI: 10.1007/s00339-009-5458-x
Keywords
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Funding
- National Natural Science Foundation of China [50632030]
- National Basic Research Program of China [2004CB719805]
- NPU Foundation [WO18101]
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We propose that the losses in left-handed materials (LHMs) can be significantly affected by changing the coupling relationship between electric and magnetic resonance. A double bowknot shaped structure (DBS) is used to construct the LHMs. And the magnetic resonance of the DBS, which resonated in the case of lower and higher frequencies than the electric resonant dip, is studied in simulation and experiment by tailoring the structural parameters. The case of magnetic resonance located at low electric resonance frequencies band is confirmed to have relatively low losses. Using full wave simulation of prism shaped structure composed of DBS unit cells, we prove the negative refraction behavior in such a frame. This study can serve as a guide for designing other similar metal-dielectric-metal (MDM) in low losses at terahertz or higher frequencies.
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