Effect of gap width on enhanced magnetic optical fields in metallic split ring resonators
Source abstract
Abstract
We analyze the U-shaped metallic split-ring resonators (SRRs) aimed at creating highly confined and enhanced magnetic field in the near-infrared frequency range. At the magnetic resonance, the induced circulating current of the SRRs could lead to a strong enhancement of the surrounding magnetic field. Such a magnetic field enhancement is found to be dominated by the gap width between two SRR arms. By decreasing the gap width to 10 nm, the SRR is predicted to have a 3790-fold enhancement of the magnetic field at the resonance wavelength of 1340 nm.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanjing University 1 Department of Physics and National Laboratory of Solid State Microstructures, , Nanjing 210093, China
Soochow University 2 School of Physical Science and Technology, , Suzhou 215006, China
Funding
National Natural Science Foundation of China
References (31)
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