What is Graphene?

About Graphene:

• It is a one-atom-thick layer of carbon atoms arranged in a hexagonal lattice. 
• It is the building block of Graphite (which is used, among other things, in pencil tips). 1mm of graphite contains some 3 million layers of graphene. 
• It was first isolated in 2004. Since then, it has found hundreds of innovative applications, from sensors and electronics to energy storage and healthcare.
• Properties:

• It is the thinnest material known to man at one atom thick. It is one million times thinner than human hair.
• It is also incredibly strong, about 200 times stronger than steel. 
• It has an extremely high surface area-to-mass ratio.  Each gram of graphene has a surface area greater than 2,600 square meters.
• It is an excellent conductor of heat and electricity. It conducts electricity better than copper.
• It is almost perfectly transparent since it only absorbs 2% of light. 
• It is impermeable to gases, even those as light as hydrogen or helium.
• It is also very flexible, which makes it suitable for applications in wearable devices and foldable electronics.