Optimization of Multilayer Graphene-Based Absorbers Under H-Polarization via Differential Evolution in a Hybrid Computing Environment
DOI:
https://doi.org/10.26565/2312-4334-2026-2-54Keywords:
graphene, wideband absorber, differential evolution, singular integral equations, multilayer periodic structure, global optimizationAbstract
A computationally efficient framework for optimizing multilayer radar-absorbing structures based on periodic planar gratings of resistive strips embedded in a dielectric slab is presented for the H-polarization case. The electromagnetic response is modeled using a rigorous singular integral equation (SIE) formulation combined with an operator-based cascading technique, providing high numerical accuracy and stability with low computational cost. This ultra-fast forward solver is integrated into a parallel differential evolution (DE) optimization framework implemented in a client–server architecture, enabling efficient solution of high-dimensional inverse design problems. The optimization targets broadband absorption under normal incidence while preserving optical transparency, with graphene used as a representative resistive material. Numerical results demonstrate effective suppression of resonance-induced spectral holes and stable, wideband absorption in multilayer structures with 10 layers, showing robustness under fabrication-inspired constraints and oblique incidence.
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