4D Optically Reconfigurable Volumetric Metamaterials,Physica Status Solidi-Rapid Research Letters

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4D Optically Reconfigurable Volumetric Metamaterials
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2020-06-05 , DOI: 10.1002/pssr.202000159
Dmitry Dobrykh _{1,

2} , Anna Mikhailovskaya _{1,

2} , Pavel Ginzburg ₁ , Dmitry Filonov ₃

Affiliation

Metamaterials are artificially created media, which allow introducing additional degrees of freedom into electromagnetic design by controlling constitutive material parameters. Reconfigurable time‐dependent metamaterials can further enlarge those capabilities by introducing a temporal variable as an additional controllable parameter. Herein, a first‐of‐its‐kind reconfigurable volumetric metamaterial‐based scatterer is demonstrated, wherein the electromagnetic properties are controlled dynamically with light. In particular, hybridized resonances in arrays of split ring resonators give rise to a collective mode that presents properties of artificial high‐frequency magnetism for centimeter waves. Resonant behavior of each individual ring is controlled with a photocurrent, which allows the fast tuning of macroscopic effective permeability. Thus, the artificial gigahertz magnon resonant excitation within a subwavelength spherical scatterer is governed by light intensity. 4D control over electromagnetic scattering in both space and time opens new avenues for modern applications, including wireless communications and automotive radars to name just a few.

中文翻译：

4D光学可重构体积超材料

超材料是人工创建的介质，可以通过控制本构材料参数将额外的自由度引入电磁设计。通过引入时间变量作为附加的可控制参数，可重新配置的与时间相关的超材料可以进一步扩大这些功能。本文展示了第一个可重构的基于超材料的体积散射体，其中电磁特性是通过光动态控制的。特别是，裂环谐振器阵列中的混合谐振产生了一种集体模式，该集体模式呈现了针对厘米波的人工高频磁场的特性。每个单独的环的共振行为都由光电流控制，从而可以快速调节宏观有效磁导率。从而，亚波长球形散射体中的人工千兆赫兹磁振子共振激发受光强度控制。对时空电磁散射的4D控制为现代应用打开了新途径，包括无线通信和汽车雷达等。

更新日期：2020-06-05

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