A single-electron transistor is an electrical device that takes advantage of a strange quantum phenomenon called tunneling to transport single electrons across a thin insulator. The device serves as an on/off switch on the tiniest scale and could play an important role in quantum computing.

Quantum dots promise an astounding range of applications, if scientists can conquer their annoying habit of blinking. Researchers recently ran simulations that offer new insights into the problem.

Advances in manufacturing technology for ‘quantum dots’ may soon lead to a new generation of LED lighting that produces a more user-friendly white light, while using less toxic materials and low-cost manufacturing processes that take advantage of simple microwave heating. It could help the nation cut its lighting bill in half.

Scientists have developed a new technique for finding quantum dots. A quantum dot should produce one and only one photon — the smallest constituent of light — each time it is energized, and this characteristic makes it attractive for use in various quantum technologies, such as secure communications. However, the trick is in finding them.

A new method to extract more efficient and polarized light from quantum dots (QDs) over a large-scale area has been developed by researchers. Their method, which combines QD and photonic crystal technology, could lead to brighter and more efficient mobile phone, tablet, and computer displays, as well as enhanced LED lighting.

Using a single molecule as a sensor, scientists have successfully imaged electric potential fields with unrivaled precision. The ultrahigh-resolution images provide information on the distribution of charges in the electron shells of single molecules and even atoms. The 3-D technique is also contact-free. The first results achieved using ‘scanning quantum dot microscopy’ have now been published.