Comment on "Superwide-band negative refraction of a symmetrical E-shaped metamaterial with two electromagnetic resonances".
Phys Rev E Stat Nonlin Soft Matter Phys
; 81(4 Pt 2): 048601, 2010 Apr.
Article
in En
| MEDLINE
| ID: mdl-20481865
ABSTRACT
The metamaterial presented by Yan [Phys. Rev. E 77, 056604 (2008)] is claimed to exhibit a superwide band of negative refraction. However, a retrieval procedure of the refractive index including the phase advance of a propagating plane wave shows that the material provides two distinct narrow bands with a negative refractive index instead of a single superwide band and thus the central claim of the paper is incorrect.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2010
Document type:
Article
Affiliation country:
Germany