Optical transparent and reconfigurable metasurface with autonomous energy supply

Due to the emergence of 5G technology and wide applications for the internet of things (IoT), metamaterials are expected to have stronger adaptability and higher performance. However, numerous previous metamaterials based on indium tin oxide (ITO) film fail to be electrically tunable and need extern...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2020-02, Vol.53 (6), p.65301
Main Authors: Ruan, Ying, Nie, Qian Fan, Chen, Lei, Cui, Hao Yang
Format: Article
Language:English
Subjects:
beam manipulation
optical transparent
reconfigurable metasurface
self-energized
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Summary:Due to the emergence of 5G technology and wide applications for the internet of things (IoT), metamaterials are expected to have stronger adaptability and higher performance. However, numerous previous metamaterials based on indium tin oxide (ITO) film fail to be electrically tunable and need external power. In this work, we propose an optically transparent and reconfigurable metasurface based on ITO film with varactor diodes. By varying the capacitances of varactors incorporated into the elements, the phase responses can be modulated as desired. In addition, based on these designed elements, we present four schemes to realize distinct scattering fields. In order to achieve an autonomous power supply for the metasurface, we integrate a solar cell by using the transparency of ITO. The simulated and measured results have good accordance, which demonstrates the excellent performance of the proposed metasurface. This work facilitates the flexibility of metasurfaces and paves the way for applications in outside communications.
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/ab548c