Abstract Photonic and phononic topological insulators (TIs) offer numerous opportunities for manipulating light sound with high efficiency resiliency. On the other hand, inverse design methodologies, such as gradient-based approaches, evolutionary deep-learning methods, provide a cost-effective strategy developing photonic structures unique features in steering sound. Here, we discuss recent ad...

Electromagnetic (EM) metasurfaces can present a versatile platform for realization of multiple diverse EM functionalities with incident wave frequency, polarization, or propagation direction through appropriate choice unit cells structures. However, the inverse design multifunctional relies on massive full‐wave numerical simulations to obtain an optimized solution. Herein, step‐by‐step procedur...