This visualization shows the electron density in a quantum dot, an artificial atom.
Wei Qiao, David Ebert, Marek Korkusinski, Gerhard Klimeck/NCN, Purdue University
March 28, 2012 Have we found the smallest bits of matter? Are there smaller particles we haven't identified? What are the most fundamental particles? A final, ultimate answer may not be attainable.
NPR thanks our sponsors
Become an NPR sponsor