Source: Th
Context: Researchers in the UK, led by Nobel laureate Andre Geim, have discovered that graphene displays an anomalous giant magnetoresistance (GMR) at room temperature.
What is Magnetoresistance?
Magnetoresistance is a phenomenon where the electrical resistance of a material change in response to a magnetic field. The magnetoresistance observed in the graphene-based device was “almost 100 times higher than that observed in other known semimetals in this magnetic field range.”
Usage of GMR: GMR is used in hard disk drives, magnetoresistive RAM in computers, biosensors, automotive sensors, microelectromechanical systems, and medical imagers.
About Graphene:
Graphene (an allotrope of carbon) is an incredibly thin material made up of a single layer of carbon atoms arranged in a hexagonal pattern. It is part of graphite but has unique properties of its own.
