Quantum dots (QD) are nanometer-sized semiconductor particles, which means they are about 10,000 times smaller than the diameter of a human hair. Due to their very small size, the light that is re-emitted when blue LED light hits the nanoparticles depends on the size of the particles. For example, QD particles that are roughly three nanometers in size produce green light, while particles around seven nanometers emit red light.   This innovative, tunable light conversion technology is now being u...