Originally posted by @sonhouse
Sorry, misspelled spectrum.
Right now they are small and working to get one up to a centimeter in diameter.
I would love to see these things a METER in diameter! Or 2! That won't be for a few years but it is an exciting development nonetheless.
If that research proves to be sound, that WILL revolutionize optics!
I have (informally and just for personal interest) studied chromatic aberration and know that it is normally a huge obstacle in designing cheap flat thin non-bulky lenses.
I don't understand how "paired nanofins control the refractive index on the metasurface" can work specifically to make all the wavelengths travel at the same speed thus bend (refract) by the same amount as required but (obviously) I take their word for it that it works.