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A Review of THz Modulators with Dynamic Tunable Metasurfaces

Terahertz Science Cooperative Innovation Center, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chendu 610054, China
National Key Laboratory of Application Specific Integrated Circuit, Hebei Semiconductor Research Institute, Shijiazhuang 050051, China
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(7), 965;
Received: 16 May 2019 / Revised: 13 June 2019 / Accepted: 28 June 2019 / Published: 1 July 2019
PDF [10217 KB, uploaded 1 July 2019]


Terahertz (THz) radiation has received much attention during the past few decades for its potential applications in various fields, such as spectroscopy, imaging, and wireless communications. To use terahertz waves for data transmission in different application systems, the efficient and rapid modulation of terahertz waves is required and has become an in-depth research topic. Since the turn of the century, research on metasurfaces has rapidly developed, and the scope of novel functions and operating frequency ranges has been substantially expanded, especially in the terahertz range. The combination of metasurfaces and semiconductors has facilitated both new opportunities for the development of dynamic THz functional devices and significant achievements in THz modulators. This paper provides an overview of THz modulators based on different kinds of dynamic tunable metasurfaces combined with semiconductors, two-dimensional electron gas heterostructures, superconductors, phase-transition materials, graphene, and other 2D material. Based on the overview, a brief discussion with perspectives will be presented. We hope that this review will help more researchers learn about the recent developments and challenges of THz modulators and contribute to this field. View Full-Text
Keywords: terahertz modulator; semiconductor material; metasurface terahertz modulator; semiconductor material; metasurface

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Wang, L.; Zhang, Y.; Guo, X.; Chen, T.; Liang, H.; Hao, X.; Hou, X.; Kou, W.; Zhao, Y.; Zhou, T.; Liang, S.; Yang, Z. A Review of THz Modulators with Dynamic Tunable Metasurfaces. Nanomaterials 2019, 9, 965.

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