Multi-fold geometric phase metasurface with versatile operations for transmission and reflection

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2024-06-13 DOI:10.1016/j.matdes.2024.113090

Faizan Faraz , Yuanqing Huang , Zhengping Zhang , Xiangming Wu , Guoping Chu , Taufeeq Ur Rehman Abbasi , Xiong Wang , Liming Si , Weiren Zhu

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Abstract

We propose a high efficiency wideband three-fold geometric phase metasurface for versatile operation of transmission and reflection. The transmission coefficient as high as 87 % is achieved in the frequency range of f₁ (15.4–15.8 GHz), while equal transmission and reflection are achieved in two frequency bands represented by f₂ (14.6–15.2 GHz & 16–17 GHz) with maximum coefficient reaches 49 %. With geometric rotation, the phase shifts of the cross-polarized transmission and co-polarized reflection are six times the rotation angle within the frequency range of 14.6–17 GHz. Furthermore, by elaborately breaking the mirror symmetry while preserving rotational symmetry, interesting features of resonance frequency shift and mode splitting are observed, offering a more fruitful approach for versatile operations. To substantiate the proposed design, a metasurface prototype for vortex beam generation is fabricated and verified by microwave measurement.

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多倍几何相位元表面，可进行多种透射和反射操作

我们提出了一种高效率的宽带三倍几何相位元面，可实现传输和反射的多功能操作。在 f1（15.4-15.8 GHz）频率范围内，传输系数高达 87%，而在以 f2（14.6-15.2 GHz & 16-17 GHz）为代表的两个频段内，传输和反射系数相等，最大系数达到 49%。通过几何旋转，在 14.6-17 GHz 频率范围内，交叉偏振传输和共偏振反射的相移是旋转角度的六倍。此外，在保留旋转对称性的同时，通过精心打破镜像对称性，还观察到了共振频率偏移和模式分裂的有趣特征，为多功能操作提供了更富有成效的方法。为了证实所提出的设计，我们制作了一个用于产生涡流束的元表面原型，并通过微波测量进行了验证。

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来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.

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