Graphene has been extensively used in numerous multifarious applications during the last decade due to its unique properties, which include large surface-to-volume ratio, unique optical properties, excellent electrical conductivity, high carrier mobility, high carrier density, high thermal conductivity, room temperature Hall Effect, ambipolar field-effect characteristics, high signal-to-noise ratio, and extremely high mechanical strength. Studying graphene helps us to predict how other materials might behave in two-dimensional form. Graphene is the best electrical conductivity of any material. Graphene can be used to make very small devices. The best part is, graphene isn't some exotic material. It's something anyone can make.