Left: A photonic crystal composed of alumina bars (white). Right: The measured electric-field distributions for incoming beams with incident angles of 45º. Selected for an Editors’ Suggestion.

From the article:

Ultratransparent Media and Transformation Optics with Shifted Spatial Dispersions
Jie Luo, Yuting Yang, Zhongqi Yao, Weixin Lu, Bo Hou, Zhi Hong Hang, C. T. Chan, and Yun Lai
Phys. Rev. Lett. 117, 223901 (2016)

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