Colliding photons that create metamaterials with unique wave propagation and abrupt time variations in their electromagnetism

https://phys.org/news/2023-08-longer-ships-night-electromagnetic-head-on.html

"manipulate wave propagation in ways not seen in nature,,, control whether waves exchanged, gained or lost energy... sculpt a pulse that we are interested in structuring... we have shown this for radio frequencies, and we are now working to realize this sculpting ability at higher frequencies... wireless communications, imaging, computing and energy harvesting"

Related:

Researchers manipulating time cause first-ever successful photon collisions
https://thedebrief.org/researchers-manipulating-time-cause-first-ever-successful-photon-collisions/

Micro-optical technology based on metamaterials takes center stage
https://phys.org/news/2023-08-micro-optical-technology-based-metamaterials-center.html