The secret to 3-D graphene? Just freeze it

The secret to 3-D graphene? Just freeze it
A study published Feb. 10 in the journal describes how the team used a modified 3-D printer and frozen water to create lattice-shaped cubes and a three-dimensional truss with overhangs using graphene oxide. The structures could be an important step toward making graphene commercially viable in electronics, medical diagnostic devices and other industries.