Plasmonics

, Volume 7, Issue 2, pp 353–358 | Cite as

Manipulate the Transmissions Using Index-Near-Zero or Epsilon-Near-Zero Metamaterials with Coated Defects

Article

Abstract

We investigate the wave transmissions through an index-near-zero (INZ) or epsilon-near-zero (ENZ) metamaterial containing various kinds of coated cylindrical defects. We find that thin coatings of the defects can dramatically change the transmission behaviors. For example, perfect magnetic conductor (PMC) defects embedded in an INZ or ENZ metamaterial yield total reflections for transverse magnetic polarized waves (Hao et al., Appl Phys Lett 96:101109, 2010). However, if the PMC defects are coated with dielectric shells, total transmissions could be achieved by tuning their permittivity values or geometric sizes. The permittivity differences of dielectric shells for total reflections and transmissions in the INZ or ENZ metamaterial could be very small, implying potential applications, such as ultrasensitive sensors and switches.

Keywords

Index-near-zero metamaterials Epsilon-near-zero metamaterials Ultrasensitive sensors 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (grant no. 11004147 and no. 11074183), the Natural Science Foundation of Jiangsu Province (grant no. BK2010211), the National Science Foundation of Jiangsu Education Committee of China (grant no.10KJB14007), the key project in Natural Science Foundation of Jiangsu Education Committee of China (grant no. 10KJA140044), and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jie Luo
    • 1
  • Ping Xu
    • 1
  • Lei Gao
    • 1
  • Yun Lai
    • 1
  • Huanyang Chen
    • 1
  1. 1.School of Physical Science and TechnologySoochow UniversitySuzhouPeople’s Republic of China

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