Anton Petrov:
https://www.youtube.com/watch?v=wQh9ezBdoPM
Also cross-posted from: https://programming.dev/post/31467824
A team of physicists at ETH Zurich has created a tiny metalens that can half the wavelength of incident light.
They have achieved this using a special metal-oxide lens material called lithium niobate and through nanoscale pattern, stamped into the material.
Such metalenses could be used as a security feature on banknotes or in the fabrication of ultra-thin elements for cameras.
I vaguely remember back in the early days of smart phones there was a way to remove the physical IR filter from the camera of certain phones and the result is that you could see through thin/lighter clothes. I wonder if this technology would do the same thing and effectively give people the perverted "x-ray vision" comic books and shitty magazines have been advertising for decades? Also if this does become a thing, are people going to start selling metal lined clothes to protect people's (women's) privacy?