Lithium-Coated Graphene Leads to Superconductivity

Lithium-Coated Graphene Leads to Superconductivity
Sep-15-15
By coating a sheet of graphene with lithium atoms, researchers have created the world’s first superconducting graphene, which could be used to scan the brain in fine detail.

Unlike most other substances, where the electrons repel each other, the electrons in superconductors form pairs that can travel without resistance. Researchers have tried before to create superconducting lithium-coated graphene, but have failed because of instabilities in the coating techniques. To overcome this obstacle, the team at the University of British Columbia coated their graphene sheets in an extreme vacuum at -450°F, which is only 5 degrees above absolute zero. This caused the electrons to move more slowly, increasing the amount of coupled pairs and leading to superconductivity.

According to Andrea Damascelli, the material could be used to manufacture SQUIDS (superconducting quantum interference devices) able to scan brain activity in fine detail.

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[HEXAPOLIS.COM]
[PNAS.ORG]
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