Swiss company Küschall has made a wheelchair it claims is the world's lightest, using wonder material graphene.
Küschall says its 1.5-kilogram Superstar wheelchair frame is lighter and stronger than any other.
This is made possible by the introduction of graphene ? an atom-thick, extra-tough material that was first engineered in 2004 and went on to win its creators the Nobel Prize in Physics.

"It is the strongest material ever tested, and therefore the strongest material known to mankind," Küschall project leader for new developments André Fangueiro told Dezeen.
"Küschall decided to use graphene to revolutionise the performance of contemporary wheelchairs with a frame that is 30 per cent lighter and 20 per cent stronger compared to classic carbon-fibre wheelchairs." "Our goal was to design the best wheelchair in the world for the most active wheelchair users."

Graphene is in the spotlight right now, with suggested uses ranging from "more pleasurable" condoms to night-vision contact lenses.
The material is a form of carbon, made up of a hexagonal lattice of carbon atoms.
The full frame of the Superstar wheelchair is made with graphene, using a lay-up process that means layers of it are applied onto a mould and then wet with resin by hand.

The light weight will help prevent arm fatigue and injury in wheelchair users ? 50 to 70 per cent of whom currently end up with upper-extremity ailments, according to Küschall.

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