Tunable C4-Symmetry-Broken Metasurfaces Based on Phase Transition of Vanadium Dioxide (VO2)

Yuting Zhang; Xiaoyuan Hao; Xueguang Lu; Meng Liu; Wanxia Huang; Cheng Zhang; Wei Huang; Yi Xu; Wentao Zhang

doi:10.3390/ma17061293

Materials (Mar 2024)

Tunable C4-Symmetry-Broken Metasurfaces Based on Phase Transition of Vanadium Dioxide (VO2)

Yuting Zhang,
Xiaoyuan Hao,
Xueguang Lu,
Meng Liu,
Wanxia Huang,
Cheng Zhang,
Wei Huang,
Yi Xu,
Wentao Zhang

Affiliations

Yuting Zhang: Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Xiaoyuan Hao: Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Xueguang Lu: College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
Meng Liu: College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Wanxia Huang: College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
Cheng Zhang: College of Science, Wuhan University of Technology, Wuhan 430070, China
Wei Huang: Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Yi Xu: Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Wentao Zhang: Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China

DOI: https://doi.org/10.3390/ma17061293
Journal volume & issue: Vol. 17, no. 6
p. 1293

Abstract

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Coupling is a ubiquitous phenomenon observed in various systems, which profoundly alters the original oscillation state of resonant systems and leads to the unique optical properties of metasurfaces. In this study, we introduce a terahertz (THz) tunable coupling metasurface characterized by a four-fold rotation (C4) symmetry-breaking structural array achieved through the incorporation of vanadium dioxide (VO2). This disruption of the C4 symmetry results in dynamically controlled electromagnetic interactions and couplings between excitation modes. The coupling between new resonant modes modifies the peak of electromagnetic-induced transparency (EIT) within the C4 symmetric metasurfaces, simulating the mutual interference process between modes. Additionally, breaking the C4 symmetry enhances the mirror asymmetry, and imparts distinct chiral properties in the far-field during the experimental process. This research demonstrates promising applications in diverse fields, including biological monitoring, light modulation, sensing, and nonlinear enhancement.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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