Oak Ridge National Laboratory (ORNL), Tennessee, is known for 3D printing large objects, such as their airplane part that made it into the Guinness World Book of Records and the 3D printed vehicles they displayed during Chicago’s IMTS. Now ORNL are working at the opposite end of the scale. The lab has 3D printed nanoscale structures that are even smaller than bacteria. ORNL researchers Philip D. Rack and Jason D. Fowlkes worked with Robert Winkler and Harald Plank of the Graz Centre for Electron Microscopy, Austria, and Brett B. Lewis from The Michael G. Stanford from the University of Tennessee on the project. The full paper of their findings can be found published here, in ACS NANO. The 3D print was done using Focused Electron Beam Induced Deposition (FEBID). Electron beams are used in nanoscale manufacturing for the precise control they offer. In this case an electron beam is used to make a complex, three-dimensional shape, by reacting gas molecules on a controlled surface. FEBID is a direct-writing method of fabrication that involves computer aided 3D simulation, and 3D design (CAD). Through simulation researchers were able to predict the degrees necessary to move the elect...