Practical Uses of Quantum Dots
Scientists have ultimately succeeded in making silicon emit light through the quantum dot concept. Basically, the making of quantum dots involves the breaking of a semiconductor material like silicon into atomic levels.
Astonishingly, this attributes to the particles a property in which they get excited and start emitting light throughout the visible spectrum. Depending upon the size, quantum dots may emit lights of different colors, with relatively larger particles emiting light over the red spectrum and the color changing toward blue with a reduction in their dimensions.
Thus, quantum dots are attributed with properties of emitting multicolored lights which specifically becomes applicable in the field of biosensors. The conventional uses for flouroscent dyes have limited spectral range and thus are not fully effective in detecting harmful bio-agents during possible biological warfare. Quantum dots, with their wide spectral range, can be used for detecting hazmat/bio-agent exposure to the pinpoint extent and are being current researched for these types of applications.
The property of quantum dots of emitting lights of different colors over the visible range is also being exploited in the field of light emitting diodes or LEDs.
The potential is also there for QD to be used for producing better and more efficient flat panel TVs and for illuminating cell phone displays with minimal consumption.
QD technology may ultimately result in an efficient lighting solution for the world in the coming years, replacing all the less efficient conventional lighting systems like CFLs and mercury vapor lamps.