Physicists suggest reversible adjustment of nanoparticles emission colour
(PHYSorg.com Nanotechnology)

Researchers have found a method of reversibly adjusting the radiation color of nanosized light sources. Previously, radiation color could be specified only during nanoparticle synthesis, but now it can be changed after synthesis. Stability and electromagnetic resonances of the particles are retained during this adjustment. This makes them promising for optical chips, LEDs and optoelectronic devices. The results are published in Nano Letters.