Chameleons are famous for their color-changing abilities. Depending on their body temperature or mood, their nervous system directs skin tissue that contains nanocrystals to expand or contract, ...

The development of metasurfaces opened a horizon for the advance of planar optics. Among various metadevices, the metalens has attracted widespread attention for practical applications in imaging and ...

(Nanowerk Spotlight) The screens we use every day – from smartphones to televisions – work by either filtering white light or creating their own illumination. These approaches have served well but ...

A research team in Korea has developed a material that may potentially replace color shifting ink in prevention of forgery of bank notes, ID cards, and so on. A team headed by Dr. Sang-seok Lee from ...