New 3D Printed Metal is as Small as a Virus and Super Strong

Caltech researchers made a major discovery recently. Caltech’s method allows for the creation of metallic materials that are as small as 150 micrometers (similar to a virus, and therefore invisible to the human eye), with a strength three to five times greater than other materials.

Why is this method of 3D printing so effective? Let’s first discuss the disadvantages of making materials so small. These nanomaterials have a “very messy microstructure” at an atomic scale, which would cause serious defects to larger metal objects.