➀ Caltech researchers have developed a tunable metasurface that can convert a single light pulse into multiple beams, each directed in different directions. ➁ This nanostructured material can reconfigure itself millions of times per second, enabling applications in optical data transmission, Li-Fi, and LIDAR. ➂ The metasurface eliminates the need for traditional lenses and mirrors, offering unprecedented freedom in controlling light with potential applications in communication, imaging, sensing, and medicine.