Graphene - Higher tier
Graphene is a one An atom is the simplest particle of an element that can exist on its own in a stable environment.thick layer of graphite.
The carbon atoms are bonded in a hexagonal pattern.
Graphene is 200 times stronger than steel, but much lighter than steel.
Graphene is transparent and very flexible.
It is also a very good conductor of electricity and heat.
Graphene can be used to make batteries and A device that converts light energy into electrical energy..