'Flying saucer' quantum dots hold secret to brighter, better lasers

By carefully controlling the size of the quantum dots, researchers can ‘tune’ the frequency, or color, of the emitted light to any desired value. The ability to produce a laser of any desired frequency from a single material would give a boost to scientists looking to study diseases at the level of tissues or individual cells by offering new tools to probe biochemical reactions. They could also enable laser display projectors that would be brighter and more energy efficient than current LCD technology.

(via WSJ)