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Study of Metallic Nanowires with Arbitrary Cross-Sectional Shapes for Negative Refraction in Visible Regime

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Abstract

Considering the nanofabrication errors, the real fabricated metallic nanowires may have irregular cross-sectional shapes. In this work, the metallic nanowires array with arbitrary cross-sectional shapes for negative refraction in visible regime was studied theoretically. To fully understand the evolution process of the negative refraction of the metallic wires with irregular cross-sectional shapes, the effective refractive index, effective mass, and effective radius of the wires were put forth and studied. The nanowire array with arbitrary cross-sectional shapes with different geometrical parameters was investigated in detail by means of computational numerical calculation on the basis of finite difference and time–domain algorithm. The influence of geometrical parameters of the nanowires on negative refraction was systematically analyzed. The calculated results indicate that the irregular shape can play a positive role for the negative refraction-based imaging application.

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Acknowledgments

The research work was financially supported by National Natural Science Foundation of China (no. 11079014 and 61077010).

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Authors and Affiliations

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, Sichuan Province, People’s Republic of China

    Yanying He & Yongqi Fu

  2. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, Jilin Province, People’s Republic of China

    Weixing Yu

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  1. Yanying He
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  2. Yongqi Fu
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Correspondence to Yongqi Fu or Weixing Yu.

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He, Y., Fu, Y. & Yu, W. Study of Metallic Nanowires with Arbitrary Cross-Sectional Shapes for Negative Refraction in Visible Regime. Plasmonics 7, 619–626 (2012). https://doi.org/10.1007/s11468-012-9350-8

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  • DOI: https://doi.org/10.1007/s11468-012-9350-8

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