This visualization shows the electron density in a quantum dot, an artificial atom. Wei Qiao, David Ebert, Marek Korkusinski, Gerhard Klimeck/NCN, Purdue University hide caption itoggle caption Wei Qiao, David Ebert, Marek Korkusinski, Gerhard Klimeck/NCN, Purdue University 13.7: Cosmos And Culture The Smallest Bits Of Things: A Brief History Of Matter 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.