Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Quantum dots are tiny particles (about the width of 50 atoms), first discovered in the early 1980s by Alexei Ekimov and Louis E. Brus, mainly used in nanotechnology and biochemistry due to their optical and electrical properties. However, quantum dots can be used in quantum computing, medical sensors, solar cells and lasers as well. Recently, scientists have built a new type of laser device called RGB laser, using special colloidal quantum dots (CQDs). To find out more about quantum dots and their potential usages – read this book.