Water-Resonator-Based Metasurface: An Ultrabroadband and Near-Unity Absorption

Qinghua Song, Wu Zhang, Pin Chieh Wu, Weiming Zhu, Zhong Xiang Shen, Peter Han Joo Chong, Qing Xuan Liang, Zhen Chuan Yang, Yi Long Hao, Hong Cai, Hai Feng Zhou, Yuandong Gu, Guo Qiang Lo, Din Ping Tsai, Tarik Bourouina, Yamin Leprince-Wang, Ai Qun Liu

研究成果: Article

52 引文 斯高帕斯(Scopus)

摘要

Metasurface absorbing material, which obtains near-unity electromagnetic absorption through subwavelength artificial structure, plays an important role in the area of stealth and shielding technology, biological imaging, etc. However, they usually suffer from narrow bandwidth and only work on planar surfaces. Here, for the first time, this study demonstrates a soft water-resonator-based metasurface, which functions as an active absorbing material across an ultrabroadband range of Ku, K, and Ka bands. Distinct from conventional metallic metasurface, the water-resonator-based metasurface absorbs the microwave by dielectric magnetic resonance and periodic grating effect, which has a perfect absorptivity of ≈99% and an absorption bandwidth (absorptivity higher than 90%) that covers 78.9% of the central frequency. Furthermore, near-unity absorption is maintained when the soft metasurface material is bent into different curvatures, promising high potential applications for antennas in reducing side lobe radiation, eliminating wall reflection in anechoic chambers, antiradar detection, and stealth.

原文English
文章編號1601103
期刊Advanced Optical Materials
5
發行號8
DOIs
出版狀態Published - 2017 四月 18

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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    Song, Q., Zhang, W., Wu, P. C., Zhu, W., Shen, Z. X., Chong, P. H. J., Liang, Q. X., Yang, Z. C., Hao, Y. L., Cai, H., Zhou, H. F., Gu, Y., Lo, G. Q., Tsai, D. P., Bourouina, T., Leprince-Wang, Y., & Liu, A. Q. (2017). Water-Resonator-Based Metasurface: An Ultrabroadband and Near-Unity Absorption. Advanced Optical Materials, 5(8), [1601103]. https://doi.org/10.1002/adom.201601103