Scientists Trapped Light Inside a Metamaterial and Made It 10x More Magnetic

Trapping Spren in Fabrials is challenging!

“Since the light bounces back and forth inside the magnet, interactions are genuinely enhanced,” CCNY’s Florian Dirnberger, the lead-author of the study, said in a press statement. “To give an example, when we apply an external magnetic field the near-infrared reflection of light is altered so much, the material basically changes its color. That's a pretty strong magneto-optic response.”

That's really neat. Maybe this can lead to actual active camouflage. Still early days though so who knows.