Matos Randy, Pala Nezih
Department of Electrical & Computer Engineering, Florida International University, Miami, FL 33174, USA.
Micromachines (Basel). 2023 Jun 16;14(6):1259. doi: 10.3390/mi14061259.
Phase-change materials (PCMs) and metal-insulator transition (MIT) materials have the unique feature of changing their material phase through external excitations such as conductive heating, optical stimulation, or the application of electric or magnetic fields, which, in turn, results in changes to their electrical and optical properties. This feature can find applications in many fields, particularly in reconfigurable electrical and optical structures. Among these applications, the reconfigurable intelligent surface (RIS) has emerged as a promising platform for both wireless RF applications as well as optical ones. This paper reviews the current, state-of-the-art PCMs within the context of RIS, their material properties, their performance metrics, some applications found in the literature, and how they can impact the future of RIS.
相变材料（PCM）和金属-绝缘体转变（MIT）材料具有独特的特性，即通过诸如传导加热、光刺激或施加电场或磁场等外部激发来改变其材料相，这进而会导致其电学和光学性质发生变化。这一特性在许多领域都有应用，特别是在可重构电气和光学结构中。在这些应用中，可重构智能表面（RIS）已成为无线射频应用以及光学应用的一个有前景的平台。本文回顾了在RIS背景下当前最先进的PCM、它们的材料特性、性能指标、文献中发现的一些应用，以及它们如何影响RIS的未来发展。
