论文标题
自由形式可重新配置的授权的深度授权逆设计
Deep-Learning-Empowered Inverse Design for Freeform Reconfigurable Metasurfaces
论文作者
论文摘要
在过去的十年中,通过工程中的各种应用见证了人工智能的进步。最近,已经开发了人工神经网络赋予了元整日的逆设计,可以设计具有不同形状和高性能的按需元原子,其中基于人工智能的设计过程是快速且自动的。但是,一旦构造了反设计的静态元原子,元素面的功能就固定了。可重新配置的元信息可以实现动态功能,同时尚未报道人工智能来设计实用的可重新配置元原子。在这里,我们为自由形式的可重新配置元信息提供了一种深度学习授权的逆设计方法,该方法可以在自定义的频带上生成按需重新配置的编码元原子。为了减少数据集的规模,首先提出了基于微波网络理论的可重新配置元原子的解耦方法,该方法首先提出了可以将可重新配置编码元原子的反相反设计过程转换为静态结构的反设计。训练了卷积神经网络模型,以预测自由形元原子的响应,并应用遗传算法来迅速生成最佳结构模式。作为概念的演示,在微波带中使用不同的自定义频谱响应生成了几个反相反设计的示例,并制造了一个反设计的宽带可重新配置的宽带可重新配置的跨侧面原型,并测量了具有宽带宽带的光束扫描应用。我们的工作为高性能可重新配置的元信息的快速自动设计过程铺平了道路。
The past decade has witnessed the advances of artificial intelligence with various applications in engineering. Recently, artificial neural network empowered inverse design for metasurfaces has been developed that can design on-demand meta-atoms with diverse shapes and high performance, where the design process based on artificial intelligence is fast and automatic. However, once the inverse-designed static meta-atom is fabricated, the function of the metasurface is fixed. Reconfigurable metasurfaces can realize dynamic functions, while applying artificial intelligence to design practical reconfigurable meta-atoms inversely has not been reported yet. Here, we present a deep-learning-empowered inverse design method for freeform reconfigurable metasurfaces, which can generate on-demand reconfigurable coding meta-atoms at self-defined frequency bands. To reduce the scale of dataset, a decoupling method of the reconfigurable meta-atom based on microwave network theory is proposed at first, which can convert the inverse design process for reconfigurable coding meta-atoms to the inverse design for static structures. A convolutional neural network model is trained to predict the responses of free-shaped meta-atoms, and the genetic algorithm is applied to generate the optimal structure patterns rapidly. As a demonstration of concept, several inverse-designed examples are generated with different self-defined spectrum responses in microwave band, and an inverse-designed wideband reconfigurable metasurface prototype is fabricated and measured for beam scanning applications with broad bandwidth. Our work paves the way for the fast and automatic design process of high-performance reconfigurable metasurfaces.