Nano-structured metasurfaces have to be tailored from artificial atoms that act as toroidal emitters, giving rise to a new form of light long predicted: “flying doughnuts” as propagating spatial-temporal electromagnetic toroidal pulses in both the visible and THz regimes.

中文翻译：

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结构物质产生环形结构光

纳米结构的超表面必须从充当环形发射器的人造原子中剪裁出来，从而产生一种长期预测的新形式的光：“飞行甜甜圈”作为在可见光和太赫兹范围内传播时空电磁环形脉冲。