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Chinese Physics, 2006, Vol. 15(8): 1772-1776    DOI: 10.1088/1009-1963/15/8/023
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Numerical simulations of negative-index refraction in a lamellar composite with alternating single negative layers

Dong Zheng-Gao(董正高), Zhu Shi-Ning(祝世宁), and Liu Hui(刘辉)
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Abstract  Negative-index refraction is demonstrated in a lamellar composite with epsilon-negative (ENG) and mu-negative (MNG) materials stacked alternatively. Based on the effective medium approximation, simultaneously negative effective permittivity and permeability of such a lamellar composite are obtained theoretically and further proven by full-wave simulations. Consequently, the renowned left-handed metamaterial comprising split ring resonators and wires is interpreted as an analogy of such ENG--MNG layers. In addition, beyond the effective medium approximation, the propagating field squeezed near the ENG/MNG interface is demonstrated to be left-handed surface waves with backward phase velocity.
Keywords:  negative refraction      left-handed metamaterial      surface wave  
Received:  08 November 2005      Revised:  23 April 2006      Accepted manuscript online: 
PACS:  78.66.Sq (Composite materials)  
  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  78.20.Bh (Theory, models, and numerical simulation)  
Fund: Project supported by the State Key Program for Basic Research of China (Grant No 2004CB619003), and by the National Natural Science Foundation of China (Grant No 90201008).

Cite this article: 

Dong Zheng-Gao(董正高), Zhu Shi-Ning(祝世宁), and Liu Hui(刘辉) Numerical simulations of negative-index refraction in a lamellar composite with alternating single negative layers 2006 Chinese Physics 15 1772

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