In 1959, Dr. Richard Feynman, the famous CalTech physicist, issued a challenge that effectively ushered in the field of nanotechnology. He offered a $1,000 prize to anyone who could make an operating electric motor which was only 1/64th of an inch cubed. Much to Feynman’s surprise, a year later, a young Pasadena-based electrical engineer successfully fulfilled the challenge.
William McLellan (1924-2011), a CalTech graduate, spent just 2½ months laboring on the project, using tools such as toothpick and a watchmaker’s lathe. About the size of a speck of sand, it is mounted under a microscope so that you can see the individual parts. Although there is no effective use for the micromotor – McLellan suggested is could be “employed to run the merry-go-round for a flea circus”—the invention is considered a pioneer in the then-novel field of nanotechnology.
The original micromotor, a demonstration copy, and archival material including notes, photographs and clippings have been donated to the permanent collection of Pasadena Museum of History by the Estate of William McLellan. Other copies of the micromotor are also in the collections of Cal Tech, the Smithsonian, and the London Science Museum.