At first glance, it's hard to image how the powder which looks like black soot can live up to the promise of being an industrial game-changer. From pliable mobile phones to stronger condoms and tennis rackets and more efficient satellites, there is seemingly no end to the possibilities suggested for the material, which was discovered 10 years ago, and now has scientists scrambling to find uses for it. At the rear of a building complex in Cleveland, once an ICI research and development facility, a small company of 20 people is well aware of the weight of expectation that graphene carries.When Applied Graphene Materials (AGM), spun out of Durham University, made its stock market debut last November, the float was more than two times oversubscribed. Within a couple of days, the share price had tripled.