标题： 可编程超表面：现状与展望 显示英文标题

标题： Programmable Metasurfaces: State of the Art and Prospects

摘要： 超表面是一种具有亚波长单元的超薄平面电磁器件，最近因其对从微波到可见光范围的电磁波的强大控制能力而引起了极大的关注。 在单元中加入可调性，可编程超表面使我们能够受益于由外部刺激控制的多种独特功能。 在本文综述中，我们将讨论可编程超表面领域的最新进展，并详细阐述实现它们的不同方法，从全局方面的可调性，到局部方面的可调性，再到软件定义的超表面。 显示英文摘要

摘要： Metasurfaces, ultrathin and planar electromagnetic devices with sub-wavelength unit cells, have recently attracted enormous attention for their powerful control over electromagnetic waves, from microwave to visible range. With tunability added to the unit cells, the programmable metasurfaces enable us to benefit from multiple unique functionalities controlled by external stimuli. In this review paper, we will discuss the recent progress in the field of programmable metasurfaces and elaborate on different approaches to realize them, with the tunability from global aspects, to local aspects, and to software-defined metasurfaces.