Silicon dioxide
Fleetwood joined Sandia National Laboratories, Albuquerque, New Mexico in 1984. He was named a Distinguished Member of the Technical Staff in the Radiation Technology and Assurance Department in 1990. In 1997 he received R&amp;D 100 and "IndustryWeek" magazine awards for co-invention of a new type of computer memory chip based on mobile protons in Silicon dioxide (protonic nonvolatile field effect transistor memory). This chip was also recognized as "Discover" magazine's 1998 Invention of the Year in computer hardware and electronics. In 2000 he was named one of the top 250 most highly cited researchers in Engineering by the Institute for Scientific Information.