Graphene shows signs of superconductivity
With extra ingredients, flat form of carbon displays evidence of resistance-free current
![different versions of graphene](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/09/090415_ag_graphene.jpg?fit=860%2C460&ssl=1)
GRAPHENE ADDITIVE Pure graphene (a) is a great conductor. But graphene doped with calcium (d) is a superconductor at low temperatures, a new study demonstrates. Trials with potassium (b) and cesium (c) showed no superconductivity.
J. Chapman et al/arXiv.org 2015