Graphene strands free electrons from resistance
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/02/ticker_graphene.jpg?fit=860%2C460&ssl=1)
Graphene nanoribbons (black atoms) grow on steps etched in silicon carbide (yellow atoms). Electrons (blue) shoot like bullets along the graphene ribbons in this artist's conception.
John Hankinson, Georgia Tech