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News Link • Energy

Could graphene ripples be tapped into as a clean, limitless energy source?

• https://newatlas.com, Michael Irving

By tapping into the random fluctuations of the carbon atoms that make up graphene sheets, the scientists can generate an alternating current strong enough to indefinitely power a wristwatch.

Graphene is a lattice of carbon just one atom thick, and its incredible strength and conductivity of electricity and heat mean it might soon start cropping up in everything from light bulbs to dental fillings, microphones, motorbike helmets, water filters, smartphone screens and even heat-dissipating shoes.

The University of Arkansas researchers stumbled onto a new potential use for the material, when they set out to study the innate movements of graphene using a scanning tunneling microscope. In a phenomenon called Brownian motion, particles suspended in a fluid will randomly move in response to collisions with larger particles in the environment. In the case of a sheet of graphene, the atoms vibrate in response to the temperature around them, making sections of the linked carbon atoms rise and fall like waves on the ocean, sending ripples running through the material.

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