Ultra-thin metalens makes infrared light visible by changing the color of light and then focusing it at a target

https://www.eurekalert.org/news-releases/1085969

"metalens mass produced using lithium niobate: starts with silicon master mold, solution containing lithium niobate crystal precursors stamped while still liquid (similar to Gutenberg's printing press), heated to 600°C, it takes on the precise crystalline structure that enables photon manipulation. More cost-effective and faster to fabricate than any previous lithium niobate devices. Suitable for mass production as molds can be reused many times... metalens apps:  cheap night vision, solar cells, holographic authentication, industry"