noun
photonic crystal
Technical term in optics and materials science for a periodic optical nanostructure that affects the motion of photons.
フォトニック結晶は光の伝搬を制御するために設計される。
Photonic crystals are designed to control the propagation of light.
From English 'photonic crystal', combining 'photonic' (relating to photons) and 'crystal' (結晶).