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The tunneling properties of the bilayer structure composed of single negative materials based on transmission lines

He Li Xu Jing-Ping Wang You-Zhen Zhang Li-Wei

The tunneling properties of the bilayer structure composed of single negative materials based on transmission lines

He Li, Xu Jing-Ping, Wang You-Zhen, Zhang Li-Wei
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  • Received Date:  29 September 2009
  • Accepted Date:  13 December 2009
  • Published Online:  15 September 2010

The tunneling properties of the bilayer structure composed of single negative materials based on transmission lines

  • 1. (1)Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092,China; (2)Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092,China;Academy of Opto-Electronics,Chinese Academy of Sciences, Beijing 100190,China; (3)School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000,China;Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092,China

Abstract: Epsilon-negative (ENG) and mu-negative (MNG) materials are fabricated by using transmission line (TL) approach, the electromagnetic tunneling properties of the bilayer structures with ENG-MNG materials are experimentally investigated. The results indicate that the two kinds of single negative materials do not support electromagnetic propagation modes, whereas the completely tunneling phenomenon occurs in the ENG-MNG pairs under special conditions when the average permittivity or average permeability equals zero respectively. Furthermore, the tunneling modes are insensitive to the scale length. Exponential amplification of the evanescent wave is also experimentally observed by simulating and measuring the electric field distributions in ENG-MNG structures at the tunneling frequency.

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