3D printing world’s lightest material gives rise to three-dimensional graphene
Aerogels are some of the lightest solid materials on Earth, containing up to 99.98-percent of air. As part of a research last year, a team of ETH Zurich scientists developed a new type of porous gold foam that is as light as air and, even floats on cappuccino. The world’s lightest material, however, is graphene…