• Acta Physica Sinica
  • Vol. 69, Issue 15, 154202-1 (2020)
Wei Yan1,2, Ji-Yong Wang1,2, Yu-Rui Qu1,2, Qiang Li3, and Min Qiu1,2,*
Author Affiliations
  • 1Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China
  • 2Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou 310024, China
  • 3State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310007, China
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    DOI: 10.7498/aps.69.20200453 Cite this Article
    Wei Yan, Ji-Yong Wang, Yu-Rui Qu, Qiang Li, Min Qiu. Tunable metasurfaces based on phase-change materials[J]. Acta Physica Sinica, 2020, 69(15): 154202-1 Copy Citation Text show less

    Abstract

    Due to their superior ability to control light, metasurfaces, ultrathin two-dimensional metamaterials composed of subwavelength nanostructures, have attracted great attention in recent years. Exploring geometric and material freedom in designing elementary nanostructures and their ambient environment of metasurfaces enables versatile optical devices, such as planar metalenses, holographic imaging and thermal radiators. With phase-change materials (PCMs) such as GeSbTe and VO2 integrated into metasurfaces, the optical functionalities of metasurfaces can be flexibly tuned by exploiting the phase transitions of PCMs induced by external stimuli, thereby opening up new directions and perspectives for dynamic tunable metamasurfaces. In this article, we review the recent progress of tunable metasurfaces based on PCMs, analyze their underlying working mechanisms and highlight their important applications. We conclude this review by bringing our perspectives on challenges and future directions in this field.
    Wei Yan, Ji-Yong Wang, Yu-Rui Qu, Qiang Li, Min Qiu. Tunable metasurfaces based on phase-change materials[J]. Acta Physica Sinica, 2020, 69(15): 154202-1
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