Transmission-Reflection-Integrated Programmable Metasurface for Simultaneous and Independent Control of Bidirectional Incident Waves

IF 18.5 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Jun Yang, Yin Li, Jun Wei Wu, Jun Yan Dai, Si Ran Wang, Hui Dong Li, You Jia Chen, Qiang Cheng
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Abstract

The flexible control of electromagnetic (EM) waves across the entire spatial domain is a long-standing aspiration in metasurface research, driven by its potential to enhance signal coverage and channel capacity. However, most existing full-space metasurfaces are restricted to manipulating incidence within one specific half-space, failing to exploit the EM potential across the entire space. This paper introduces a novel bidirectional transmission-reflection-integrated metasurface (BTRIM) for simultaneous and independent control of full-space incident waves. By dynamically adjusting diode states, the BTRIM can switch among simultaneous and independent forward/backward reflection, forward transmission-reflection (TR), and backward TR functions, each with an independent 1-bit phase response. The core innovation lies in integrating transmission and reflection within a single structure, enabling the metasurface to function at the same frequency and polarization within a compact design. Simulations and experimental validation are conducted to demonstrate BTRIM's ability to implement various wave functions and enhance signal intensity for users in both indoor and outdoor environments. The agreement between simulation and experimental results validates the BTRIM's capacity to simultaneously and independently regulate EM waves from all spatial directions, offering new insights into full-space wave manipulation. This breakthrough creates opportunities for applications in EM sensing, channel enhancement, and next-generation communication systems.

Abstract Image

同时独立控制双向入射波的传输-反射-集成可编程超表面
电磁(EM)波在整个空间域中的灵活控制是超表面研究的一个长期愿望,它具有增强信号覆盖和信道容量的潜力。然而,大多数现有的全空间元表面都局限于在一个特定的半空间内操纵入射,无法利用整个空间的电磁势。本文介绍了一种用于同时独立控制全空间入射波的新型双向透射-反射集成超表面(BTRIM)。通过动态调整二极管状态,BTRIM可以在同时独立的前向/后向反射、前向传输反射(TR)和后向TR函数之间切换,每个函数都具有独立的1位相位响应。核心创新在于将透射和反射集成在单一结构中,使超表面能够在紧凑的设计中以相同的频率和极化工作。模拟和实验验证验证了BTRIM在室内和室外环境中实现各种波函数和增强用户信号强度的能力。模拟和实验结果之间的一致性验证了BTRIM同时独立调节来自所有空间方向的电磁波的能力,为全空间波操纵提供了新的见解。这一突破为EM传感、信道增强和下一代通信系统的应用创造了机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Advanced Functional Materials
Advanced Functional Materials 工程技术-材料科学:综合
CiteScore
29.50
自引率
4.20%
发文量
2086
审稿时长
2.1 months
期刊介绍: Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.
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