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Broadband and polarization-insensitive helix metamaterial absorber using graphene for terahertz region

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Abstract

A polarization-independent broadband metamaterial absorber having graphene layer is proposed in this study. It is found that the absorption spectrum of the absorber becomes more promising after using graphene layers. Graphene layer increases the device robustness and stability of the device. The proposed absorber works for a wide operating region covering near ultraviolet to near infrared, i.e., 200–1792 nm. Absorption characteristics including the operating wavelength and the polarization nature of various existing absorbers is compared with the proposed absorber. It is noticed that the proposed absorber is physically realizable since it has a sufficiently large geometry and resistivity toward change in the number of graphene layers.

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Acknowledgments

The present work is partially supported by the department of science and Technology (DST), New Delhi, India under the fast track young scientist scheme no. SB/ FTP/ ETA -0478/2012.

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Authors and Affiliations

  1. Electronics and Communication Engineering Department, Motilal Nehru National Institute of Technology Allahabad, Allahabad, 211004, India

    Sajal Agarwal & Y. K. Prajapati

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  1. Sajal Agarwal
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  2. Y. K. Prajapati
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Correspondence to Y. K. Prajapati.

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Agarwal, S., Prajapati, Y.K. Broadband and polarization-insensitive helix metamaterial absorber using graphene for terahertz region. Appl. Phys. A 122, 561 (2016). https://doi.org/10.1007/s00339-016-0078-8

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