Dumbbell Metamaterial with Absorbance in Terahertz Frequency Range

  • Shubham Kumar
  • Prutha P. Kulkarni
Keywords: Metamaterial, absorbance, Terahertz, resonator, metasurface



This paper presents the design and experimental characterization of a dumbbell-shaped metamaterial structure with absorbance in the terahertz frequency range. The proposed structure consists of a metallic dumbbell-shaped resonator placed on a substrate and covered with a thin layer of dielectric material. The structure exhibits a strong resonant behavior at a frequency of 0.9 THz due to the presence of the metallic resonator. The effect of different design parameters such as the size and shape of the resonator, the thickness of the dielectric layer, and the spacing between the resonators on the absorption properties of the metamaterial structure is investigated using full-wave simulations. The experimental results show that the proposed metamaterial structure exhibits a high absorbance of up to 80% at 0.9 THz, which makes it a promising candidate for various applications in terahertz technology, such as sensing, imaging, and spectroscopy.


[1] C. M. Soukoulis and M. Wegener, "Past achievements and future challenges in the development of three-dimensional photonic metamaterials," Nature Photonics, vol. 5, pp. 523-530, 2011.
[2] N. I. Zheludev and Y. S. Kivshar, "From metamaterials to metadevices," Nature Materials, vol. 11, pp. 917-924, 2012.
[3] X. Chen, T. M. Grzegorczyk, B.-I. Wu, J. Pacheco, and J. A. Kong, "Robust method to retrieve the constitutive effective parameters of metamaterials," Physical Review E, vol. 70, no. 1, p. 016608, 2004.
[4] Q. Wu, I. R. Hooper, A. R. Cowley, and A. P. Hibbins, "Metamaterial absorber with near unity absorbance in the terahertz regime," Applied Physics Letters, vol. 103, no. 16, p. 161106, 2013.
[5] [5] J. Huang, “Theory of lc circuit-based metamaterials,” Journal of Nanophotonics, vol. 11, no. 1, p. 016016, 2017.
[6] B. R. Sangala, A. Nagarajan, P. Deshmukh, H. Surdi, G. Rana, V. G. Achanta, and S. Prabhu, “Single and multiband THz metamaterial polarisers,” Pramana, vol. 94, no. 1, pp. 1–6, 2020.
[7] D. R. Chowdhury, R. Singh, M. Reiten, H.-T. Chen, A. J. Taylor, J. F. O’Hara, and A. K. Azad, “A broadband planar terahertz metamaterial with nested structure,” Optics Express, vol. 19, no. 17, pp. 15,817–15,823, 2011.
[8] H. Tao, C. Bingham, A. Strikwerda, D. Pilon, D. Shrekenhamer, N. Landy, K. Fan, X. Zhang, W. Padilla, and R. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Physical Review B, vol. 78, no. 24, p. 241103, 2008.
[9] A. Marwaha, et al., “An accurate approach of mathematical modeling of SRR and SR for metamaterials,” Journal of Engineering Science & Technology Review, vol. 9, no. 6, 2016.
[10] B. George, B. Nair, and S. K. Menon, “Mathematical modeling and validation of a hexagonal split ring resonator,” in 2018 Second International Conference on Advances in Electronics, Computers and Communications (ICAECC). IEEE, 2018, pp. 1–4.
[11] V. E. Elander, “Mathematical modeling of metamaterials,” 2011.
[12] S. Bose, M. Ramaraj, S. Raghavan, and S. Kumar, “Mathematical modeling, equivalent circuit analysis and genetic algorithm optimization of an n-sided regular polygon split ring resonator (NRPSRR),” Procedia Technology, vol. 6, pp. 763–770, 2012.
[13] A. Valipour, M. H. Kargozarfard, M. Rakhshi, A. Yaghootian, and H. M. Sedighi, “Metamaterials and their applications: an overview,” Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, p. 1464420721995858, 2021.
[14] T. S. Rappaport, Y. Xing, O. Kanhere, S. Ju, A. Madanayake, S. Mandal, A. Alkhateeb, and G. C. Trichopoulos, “Wireless communications and applications above 100 GHz: Opportunities and challenges for 6G and beyond,” IEEE Access, vol. 7, pp. 78,729–78,757, 2019.
How to Cite
Kumar, S., & Kulkarni, P. P. (2023). Dumbbell Metamaterial with Absorbance in Terahertz Frequency Range. Asian Journal For Convergence In Technology (AJCT) ISSN -2350-1146, 9(1), 9-11. https://doi.org/10.33130/AJCT.2023v09i01.003

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