<< graphene’s two-dimensional, honeycomb structure acts like an electron superhighway in which all the particles have to travel in the same lane. The electrons in this ultra-clean graphene act like massless relativistic objects, some with positive charge and some with negative charge. They move at incredible speed — 1/300 of the speed of light — and have been predicted to collide with each other ten trillion times a second at room temperature. These intense interactions between charge particles have never been observed in an ordinary metal before >>
<< When the strongly interacting particles in graphene were driven by an electric field, they behaved not like individual particles but like a fluid that could be described by hydrodynamics >>
http://www.kurzweilai.net/a-black-hole-on-a-chip-made-of-a-metal-that-behaves-like-water
Jesse Crossno, Jing K. Shi, et al. Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene. Science 11 Feb 2016 DOI: 10.1126/science.aad0343
http://science.sciencemag.org/content/early/2016/02/10/science.aad0343
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