Exotic photonic crystals empower robust one-way transport of light

https://phys.org/news/2022-06-exotic-photonic-crystals-empower-robust.html

"A one-way street for light was built with the combination of two ENZ-MO-PhCs with the opposite magnetization. Unidirectional and backscattering immune transport of light was numerically obtained at the interface between two PhCs. And the transport performance was unchanged even with large-size defects and sharp bends"