Microlattice: Metal That's 100 Times Lighter than Styrofoam

Microlattice is "a lattice of interconnected hollow tubes with a wall thickness of 100 nanometers, 1,000 times thinner than a human hair." It's made from nickel and is 99.99% air. As a result, it's very light. Here's a video that demonstrates its properties and discusses its potential use in structural reinforcement and shock absorption.