In Pictures: 10 really small devices that could ch...
Researchers at the University of Texas at Austin claim to have bragging rights for the smallest semiconductor laser around. At only 30 nanometers wide, the laser is the right size for integrating onto a computer or communications chip.
The laser produces an intense green light by exciting atoms inside a tiny pipe that's filled with indium gallium nitride. Nano-lasers like this can be used to convert electronic signals to optical pulses, speeding up how quickly circuits transfer data.
In Pictures: 10 really small devices that could change the world