Seeing the world through different eyes

Short-wave infrared light (SWIR) is useful for many things: It helps sort out damaged fruit and inspecting silicon chips, and it enables night vision devices with sharp images. But SWIR cameras have so far been based on expensive electronics. Researchers at Empa, EPFL, ETH Zurich and the University of Siena have now developed a SWIR screen consisting of just eight thin layers on a glass surface. This could make IR cameras useful everyday objects.