Want your computer to go faster? Add light!

Scientists, including one of Indian-origin, have developed novel devices that could usher in a new wave of highly efficient electronics, including computers, that can be turned on and off using light. Every second, your computer must process billions of computational steps to produce even the simplest outputs. Imagine if every one of those steps could be made just a tiny bit more efficient, researchers said.
“It would save precious nanoseconds,” said Northeastern University Boston, assistant professor of physics Swastik Kar. Kar and his colleague Yung Joon Jung, have developed a series of novel devices that do just that. The duo combined their expertise – Kar’s in graphene, a carbon-based material known for its strength and conductivity, and Jung’s in the mechanics of carbon nanotubes, which are nanometre-sized rolled up sheets of graphene to unearth a physical phenomenon that could usher in a new wave of highly efficient electronics.