Metalens imaging simulation in Synopsys BeamProp BPM tool. Credit: Synopsys

Scaling challenges of metasurfaces

Greg Blackman explores the optical design approaches for modelling metasurfaces

For the experiment, the holographic images were visualised using an optical path consisting of a continuum laser, iris, lens, the sample and an optical screen. Credit: Qi Dai, Wuhan University

Metasurface creates three different images depending on illumination

The three-channel device could be used as an anticounterfeiting measure or offer a new way to securely deliver encrypted information

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