Asymmetric tip design for far infrared metamaterial sensor
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Affiliation:

School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Clc Number:

O434.3

Fund Project:

Supported by the National Key Research and Development Program of China (2022YFA1404004, 2023YFF0719200); the National Natural Science Foundation of China (61805140, 62335012, 61988102).

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    Abstract:

    This study investigates an asymmetric tip design for a far-infrared metamaterial aimed at enhancing the Q factor and detection sensitivity. Employing the conventional double-split square ring resonator as a model, we conducted theoretical simulations to investigate the impact of different tip angles on the electric field distribution, resonance spectrum, and Q factor. The results show that the asymmetric tip increases the surface electric field of the resonator, decreases the full width at half maximum (FWHM) of the resonance peak, and increases the Q factor to over three times that of the conventional split ring. Our findings offer valuable insights for the development of highly sensitive far-infrared metamaterial sensors. Furthermore, we propose a straightforward and practical optimization approach to enhance the Q factor of conventional split ring metamaterials.

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LU Xiao-Sen, WU Xu, WEI Xiao-Ke, WANG Jun-Jie, WANG Qi-Liang, JIN Zuan-Ming, PENG Yan. Asymmetric tip design for far infrared metamaterial sensor[J]. Journal of Infrared and Millimeter Waves,2024,43(3):324~330

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History
  • Received:September 19,2023
  • Revised:April 22,2024
  • Adopted:January 12,2024
  • Online: April 12,2024
  • Published: