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Graphene is a superconductor

13.03.2018

A group of scientists from MIT has succeeded in turning graphene into a superconductor, through which electricity is transmitted without resistance. The secret is to combine the two layers of nanomaterial at a "magic angle".

Unlike conventional conductors based on gold or copper, superconductors differ in that they transmit electricity without any resistance. This means that neither heat loss nor power loss occurs during transmission. The efficiency of systems (for example, computers) based on such conductors is much higher than that of modern analogues familiar to us.

In the past, researchers have already been able to detect several superconducting materials, but they all work only at temperatures close to absolute zero. Cuprates have become the most successful superconductors, but even they operate at temperatures 200 degrees below the freezing point of water. However, simply opening such a conductor is much easier than adapting it for practical needs, and therefore over the past 25 years the industry has not achieved much success in this direction. The dream of all inventors is a material that would exhibit the properties of superconductivity at ordinary room temperature and would not require expensive and bulky cooling systems.

New research by scientists from MIT can open the door to the era of superconductors for humanity. Scientists have been experimenting with graphene, which, as you know, has already proven itself with many interesting and unusual physical properties. This two-dimensional material is made of carbon atoms, and over the past few months, researchers have experimentally proven not only the incredible strength, but also the excellent ability of graphene to conduct heat and energy. Now, another remarkable property has been added to the common piggy bank: when cooled to almost absolute zero, two sheets of graphene, squeezed together and shifted relative to each other by 1.1 degrees, become superconductors. This discovery came as a surprise even to the scientists themselves!

The discovery of the fact that graphene is capable of superconductivity will in the near future mark the beginning of a whole series of research in this area. Graphene is much easier to work with than complex cuprines, and therefore this material in the future may become the key to creating universal superconductors that will work at room temperature.

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