Scientists create world’s lightest material out of metal

A team of researchers from the University of California (UC) Irvine, HRL Laboratories and the California Institute of Technology have developed an ultralight material out of metal – with a density of 0.9 mg/cc – about one hundred times lighter than Styrofoam

The new material redefines the limits of lightweight materials because of its unique “microlattice” cellular architecture. The researchers were able to make a material that consists of 99.99 percent air by designing the 0.01 percent solid at the nanometer, micrometer and millimeter scales.