Tuesday, April 02, 2019


Exotic Spiraling Electrons Discovered

Physicists have discovered an exotic form of electrons that spin like planets. Called “chiral surface excitons” they consist of particles and anti-particles bound together and swirling around each other on the surface of solids. Excitons form when intense light shines on solids, kicking negatively charged electrons out of their spots and leaving behind positively charged “holes.” The electrons and holes resemble rapidly spinning tops. The electrons eventually “spiral” towards the holes, annihilating each other in less than a trillionth of a second while emitting a kind of light called “photoluminescence.” This finding has applications for devices such as solar cells, lasers and TV and other displays.