UC Santa Barbara researchers Prasad Iyer and Prof. Jon Schuller propose a new route, novel electrically reconfigurable metasurfaces, as an important step towards on-chip programmable optics.

In a new study led by the University of Adelaide in Australia, researchers have developed a versatile direct-doping approach to integrate UPNCs in glass. They discovered that the upconversion emissions of erbium ions can be used to diagnose the survival and dissolution fraction of doped UPNCs in glass.