Researchers at the University of California at Berkeley and the Lawrence Berkeley National Lab have made the first high-performance and robust lasers from caesium lead halide nanowires that could be used in on-chip photonic and spectroscopic applications, such as optical communications, imaging and sensing. The lasing colour of the devices can also easily be tuned from green to blue by changing the halide ion….
http://nanotechweb.org/cws/article/tech/64014
