Parfocal zoom metalens

We designed and experimentally realized a non-mechanically tuned metalens capable of performing x10 zoom while maintaining focus. Two embodiments of the concept are experimentally demonstrated based on phase change materials in the mid-infrared and polarization-multiplexing in the visible.
See more details in the article: onlinelibrary.wiley.com/doi/f...

[@thomaslema1743]

This presentation, was clear and went straight to the point, loved it!

[@takiyaazrin7562]

Russian for the first time not talking too fast. Love you doctor.

[@GalWiner]

very cool!
how is the phase transition driven? Does it react to an external electric field?