《Metasurfaces Generated by Multi-objective and Topology Optimization / 多目的最適化・トポロジー最適化構造生成メタサーフェス》

Concept

Using optimization algorithms, the work develops metasurfaces that combine unique electrode geometries with selective transmission and reflection of electromagnetic waves.

The shapes of metal electrodes on a glass substrate are generated automatically through dimensional, multi-objective, and topology optimization. Candidate structures are evaluated by electromagnetic field analysis (finite element computation), a genetic algorithm searches for geometries that satisfy several objectives at once, and the resulting performance is confirmed by measurement.

Geometries that are hard to reach by hand-drawn design give rise to the function of the material itself. The work presents this design process and the generated structures together with the material.

Technical Setup

Glass and metal electrodes (6 in square)

• Metasurface
• Dimensional optimization
• Multi-objective optimization
• Genetic algorithm
• Electromagnetic field analysis (finite element computation and measurement)