从分析超构单元的相位调控原理入手，讨论如何利用多个光学自由度实现多功能的光学响应。作为验证，以非晶硅矩形纳米柱组成的超构表面为例，展示了不同相位机制对光场的多维度调控能力。该研究为超构表面的灵活设计提供理论支持，同时对多功能超构器件的研究进展进行介绍和展望。

Here, we begin with analyzing the principle of phase modulation mechanism of metasurface, and then discuss how to utilize multiple degrees of freedom to achieve multifunctional optical response. For a proof of concept, we design several metasurfaces composed of amorphous silicon (a-Si) nanorods to demonstrate the multichannel control of light with different phase mechanisms. This study provides theoretical support for flexible design of metasurfaces, and introduces and gives a summary of the research progress of multifunctional meta-devices.