A single carbon nanotube has been used as a scalable and tunable light source and integrated into a nanoscale waveguide by researchers in Germany. The nanotubes are part of a photonic-crystal waveguide that converts electric signals into light. The researchers hope their work could advance the field of optoelectronics and help to produce faster computer chips……..
http://nanotechweb.org/cws/article/tech/64749
