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- Title
Magnetic response of split ring resonator metamaterials: From effective medium dispersion to photonic band gaps.
- Authors
CHAKRABARTI, SANGEETA; RAMAKRISHNA, S
- Abstract
On systematically investigating the electromagnetic response of periodic split-ring resonator (SRR) metamaterials as a function of the size-to-wavelength ( a/ λ) ratio, we find that the stop bands due to the geometric resonances of the SRR weaken with increasing ( a/ λ) ratio, and are eventually replaced by stop bands due to Bragg scattering. Our study traces the behaviour of SRR-based metamaterials as the resonance frequency increases and the wavelength of the radiation finally becomes comparable to the size of the unit cell of the metamaterial. In the intermediate stages, the dispersion of the SRR metamaterial can still be described as due to a localized magnetic resonances while Bragg scattering finally becomes the dominant phenomenon as a/ λ∼1/2.
- Subjects
MAGNETIC resonance; RESONATORS; BAND gaps; METAMATERIALS; PARTICLE size determination; DISPERSION (Chemistry)
- Publication
Pramana: Journal of Physics, 2012, Vol 78, Issue 3, p483
- ISSN
0304-4289
- Publication type
Article
- DOI
10.1007/s12043-011-0241-x