Multifunctional metadevices have garnered substantial attention because of their optical characteristics for operation within the terahertz regime. However, metasurfaces have unalterable geometrical configurations that represent a limitation in this context, thus necessitating dynamic adjustability of the structures. In this study, a development strategy is used that involves a dual stimuli-responsive programmable terahertz metamaterial based on indium oxide (InO). When exposed to light irradiation, the resonant frequency of this metamaterial undergoes a red shift of up to approximately 100 GHz when compared with the original resonant frequency. The processed terahertz signal is then used for binary coding as well as computer color coding through two active stimulation methods. This dual stimuli-triggered metamaterial concept can be extended to other frequency bands and thus offers a promising route toward electromagnetic information processing applications.

中文翻译：

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太赫兹区多功能双刺激触发元装置

多功能元器件因其在太赫兹范围内运行的光学特性而引起了广泛关注。然而，超表面具有不可改变的几何配置，这在这方面代表了限制，因此需要结构的动态可调节性。在这项研究中，采用的开发策略涉及基于氧化铟（InO）的双刺激响应可编程太赫兹超材料。当受到光照射时，与原始谐振频率相比，这种超材料的谐振频率会发生高达约 100 GHz 的红移。然后，处理后的太赫兹信号通过两种主动刺激方法用于二进制编码和计算机颜色编码。这种双刺激触发的超材料概念可以扩展到其他频段，从而为电磁信息处理应用提供了一条有前途的途径。