LIGC Applications has developed the Guardian G-Volt, a face mask with a graphene filtration system that can be sterilised and safely re-used.
Global interest in protective masks has surged in recent months, due to ongoing coronavirus outbreaks around the world. However, the company, which is based in New York, said it had taken five years to design and test the mask. They are now crowdfunding the project online.

With its graphene filtration system the Guardian G-Volt is 99 per cent effective against particles over 0.3 micrometers, and 80 per cent effective against anything smaller, claims LIGC Applications.
For comparison, a N95 respirator mask blocks 95 per cent of particles over 0.3 micrometers. Viruses such as coronavirus can be transmitted through tiny droplets of water.
A low level electrical charge will pass through Guardian G-Volt when it is plugged in to a portable battery pack via a USB port. This charge would repel any particles trapped in the graphene mask.
At home, a docking system will allow the mask to be fully sterilised so it can be worn again.

With coronavirus outbreaks around the world, the effectiveness of N95 respirator masks has been called into question. Once these masks become damp, they must be disposed of and replaced.
"We completely understand and the timing is cause for this cynical response," LIGC Applications' head of international outreach Yossi Levin told Dezeen.

However, he stressed that the mask has been in the making for...