Graphene “the super material of the earth”.
Or we can say that graphene is a semi-metal with a small overlap between the valence and the conduction bands. It is an allotrope of carbon consisting of a single layer of carbon atoms arranged in a hexagonal lattice.
Graphene was discovered by two Russian scientists “A Geim and K Novoselov" in 2004 with the help of two simple things i.e. “pencil and tape”.
They place pencil graphite over tape and make thin so that it will become a single layer i.e. Graphene.
And for this they get Noble prize in 2010.
Application
With all these properties it has so many applications like in future with this we will be able make buildings, mobiles phones, instant charging batteries and so many other things but in future.
But what’s now?
So now with graphene scientists have made a graphene based “radiation detector”.
With a simple design and relative cost, the device classified as a bolometer. The new bolometer created by researcher at "Chalmers University of Technology" in Sweden is based on graphen's thermoelectric properties.
Radiation heats part of the device, inducing electron to move. The displaced electrons generate an electric field, which creates a voltage difference across the device.
Other devices rely on the generation of electric current or resistance change by incoming radiation.
However, measuring changes in current or resistent requires an external power source to generate initial current. Due to which these bolometers are slow.
But the piece of graphene in the new bolometer is small, so it is one of the fastest bolometer because it heats up and responds quickly.
Why this is super material?
Because it conduct electricity better than ‘silver’, conduct heat better than ‘diamond’ and stronger than ‘steel’ and even with all these properties it also flexile.
What is Graphene?
Graphene is a simple material which forms of carbon atom. Graphite is the naturally occurring crystal of carbon and it is formed of large number of graphene shits which are placed over each other.
Or we can say that graphene is a semi-metal with a small overlap between the valence and the conduction bands. It is an allotrope of carbon consisting of a single layer of carbon atoms arranged in a hexagonal lattice.
Graphene was discovered by two Russian scientists “A Geim and K Novoselov" in 2004 with the help of two simple things i.e. “pencil and tape”.
They place pencil graphite over tape and make thin so that it will become a single layer i.e. Graphene.
And for this they get Noble prize in 2010.
Application
With all these properties it has so many applications like in future with this we will be able make buildings, mobiles phones, instant charging batteries and so many other things but in future.
But what’s now?
So now with graphene scientists have made a graphene based “radiation detector”.
With a simple design and relative cost, the device classified as a bolometer. The new bolometer created by researcher at "Chalmers University of Technology" in Sweden is based on graphen's thermoelectric properties.
Radiation heats part of the device, inducing electron to move. The displaced electrons generate an electric field, which creates a voltage difference across the device.
Other devices rely on the generation of electric current or resistance change by incoming radiation.
However, measuring changes in current or resistent requires an external power source to generate initial current. Due to which these bolometers are slow.
But the piece of graphene in the new bolometer is small, so it is one of the fastest bolometer because it heats up and responds quickly.
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