Liquid Armour the New Bulletproof Vest

Armor Holdings plans to start selling their liquid armour next year. The new armour, originally envisioned to be spread on like peanut butter, is instead sprayed onto Kevlar in ultrathin coats. It’s a mix of polyethylene glycol, a polymer found in laxatives and other consumer products, and nanobits of silica, or purified sand. Together they produce a sheer-thickening liquid that stiffens instantly into a shield when hit hard by an object. It reverts to its liquid state just as fast when the energy from the projectile dissipates — via Slashdot