An optically transparent rectifying metasurface for 2.4/5.8 GHz dual-band RF energy harvesting

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-09 DOI:10.1063/5.0242451

Lin Dong, Liming Si, Boyang Liu, Qitao Shen, Rong Niu, Xiue Bao, Houjun Sun, Weiren Zhu

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引用次数: 0

Abstract

In this paper, an optically transparent rectifying metasurface system (RMS) is designed and validated for simultaneously harvesting radio frequency (RF) energy while enabling the efficient transmission of visible light. The RMS comprises an optically transparent metasurface absorber (OTMA) based on indium tin oxide materials and a voltage-doubling rectifier circuit. The proposed RMS features several advantages, including polarization insensitivity, wide incidence angle coverage, low profile, and the ability to operate at low incident power densities. Utilizing a stacked structure, the RMS and the solar cell can provide a more hybrid output power to accommodate more application scenarios. To validate its performance, a prototype 3 × 3 OTMA array was designed, fabricated, and measured. Results demonstrate that the fabricated RMS achieves RF to DC efficiencies of 19.64% at 2.4 GHz and 7.92% at 5.8 GHz, with an impressive 80% optical transparency. Furthermore, solar energy harvesting tests show that the measured maximum power point for the RF/solar hybrid energy harvesting is 13.11% higher than that of a single solar panel under a light intensity of 257 lux.

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一种用于2.4/5.8 GHz双频射频能量采集的光学透明整流超表面

在本文中，设计并验证了一种光透明整流超表面系统（RMS），该系统可以同时收集射频（RF）能量，同时实现可见光的有效传输。该RMS包括一个基于氧化铟锡材料的光学透明超表面吸收器（OTMA）和一个倍压整流电路。所提出的RMS具有几个优点，包括偏振不敏感、宽入射角覆盖、低轮廓以及能够在低入射功率密度下工作。利用堆叠结构，RMS和太阳能电池可以提供更多的混合输出功率，以适应更多的应用场景。为了验证其性能，设计、制作并测量了一个原型3 × 3 OTMA阵列。结果表明，制备的RMS在2.4 GHz和5.8 GHz下的RF - DC效率分别达到19.64%和7.92%，光学透明度达到80%。此外，太阳能收集试验表明，在257勒克斯光强下，射频/太阳能混合能量收集的测量最大功率点比单个太阳能电池板高13.11%。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.