论文标题
拓扑优化了在微波频率上研究的多功能多功能机械可重构的元观
Topology optimized multi-functional mechanically reconfigurable meta-optics studied at microwave frequencies
论文作者
论文摘要
Metasurfaces通过减少光学组件的厚度并将多个功能合并到单层设备中来提高光学磁场的领域。但是，这通常会降低性能，尤其是用于多功能和宽带应用程序。三维元结构可以为高级应用提供必要的自由度，同时保持最小的厚度。这项工作探索了3D基于机械配置的焦点，光谱消除和极化排序的机械可重构设备。作为概念验证，可旋转的设备，辅助设备和基于剪切的设备的设计采用基于伴随的拓扑优化，3D打印，并在微波频率（7.6-11.6 GHz）中测量，并在阳性室内进行。
Metasurfaces advanced the field of optics by reducing the thickness of optical components and merging multiple functionalities into a single layer device. However, this generally comes with a reduction in performance, especially for multifunctional and broadband applications. Three-dimensional metastructures can provide the necessary degrees of freedom for advanced applications, while maintaining minimal thickness. This work explores 3D mechanically reconfigurable devices that perform focusing, spectral demultiplexing, and polarization sorting based on mechanical configuration. As proof of concept, a rotatable device, auxetic device, and a shearing-based device are designed with adjoint-based topology optimization, 3D-printed, and measured at microwave frequencies (7.6-11.6 GHz) in an anechoic chamber.
