Troops to test liquid armour

I found a very interesting article about troops to test liquid armour. Here is the basic idea.
SOLDIERS are to begin trialling a futuristic “liquid armour” that is worn like ordinary clothing but turns into a rigid shield as soon as it is hit by bullets or shrapnel.

The armour consists of material impregnated with liquid silica that has been modified using nanotechnology. It is designed as a flexible alternative to the current military armour, which consists of Kevlar material reinforced by heavyweight ceramic plates.

link to the article