Chains of gold nanoparticles might be the light-conducting connectors for a future generation of optical computing devices, suggests research from Ludwig-Maximilians-Universitaet (LMU) in Munich. Conduction of photons in such nanowires would be achieved through plasmonic oscillations. Such waves travel at only 10 percent of the speed of light in a vacuum, but there would be a massive build up of heat. The LMU team has now shown that silver nanoparticles added to the system can reduce energy consumption and so keep the temperature down. With the silver nanoparticles in place energy is transported with almost no loss and on the femtosecond timescale, the team reports.