Quantum dot imaging
Quantum dots (QD) are very small particles, so minor that their optical and electronic properties vary from those of larger particles. This phenomenon is widespread in semiconductors. QD's are a central subject in nanotechnology. In the linguistic of materials science, nanoscale semiconductor materials firmly confine both electrons or electron holes. Quantum dots are also occasionally mentioned to as artificial atom, a term that emphasizes a single thing with bound, discrete electronic conditions, as is the case with naturally occurring atoms or molecules.