Because photonic crystals are artificial crystals, it is our studying issue to design and fabricate the photonic crystals.

由于光子晶体是人造晶体，因此设计和制造光子晶体就成了研究的焦点。

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Magnetized plasma photonic crystals are artificial periodic structures composed of magnetized plasmas and dielectric structures (or vacuum).

磁化等离子体光子晶体是磁化等离子体和介质(真空)构成的人工周期性结构。

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The physical mechanism of slow light in photonic crystals, a novel and artificial material with periodic dielectric structures, is described with a few different approaches.

光子晶体是一种具有周期性介电结构的人造材料，具有独特的光子带隙特性，能控制光子的运动状态，是慢光实现的最佳材料系统之一。

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"By using natural crystals for the first time, rather than artificial metamaterials, we have been able to scale up the size of the cloak and can hide larger objects, thousands of times bigger than the wavelength of the light, " said Shuang Zhang, the University of Birmingham physicist who led the research.

BBC: Invisibility cloaking benefits from crystal-clear idea