News: Recently, researchers in the UK, led by Nobel laureate Andre Geim have found that graphene displays an anomalous giant magnetoresistance (GMR) at room temperature.

What is GMR?
 Magnetoresistance is the tendency of a material to change the value of its electrical resistance in an externally-applied magnetic field.
 Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in multilayers composed of alternating ferromagnetic and non-magnetic conductive layers.

Applications of GMR:
 GMR is used in hard disk drives, magneto resistive RAM in computers, biosensors, automotive sensors, microelectromechanical systems, and medical imagers.

Important facts about Graphene:
 It is composed of monolayer of closely packed carbon atoms that form a hexagonal honeycomb lattice.
 It is the building-block of Graphite.
 It is the thinnest, most electrically and thermally conductive material in the world.
 It is also tremendously strong—about 200 times stronger than steel and flexible, as well as transparent.
 It is also known as a wonder material due to its vast potential in the energy and medical world.

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