Buckyballs. Quantum dots. Golden triangles. Organic light-emitting diodes. Welcome to the world of nanotechnology - the engineering of new materials and new products, the use of new manufacturing techniques, all exploiting properties possessed at the infinitesimally small, or nano, scale. Virtually every large corporation now has a nanotechnology R & D operation. The US government is putting in serious investment. Huge promises are held out in the fields of medicine, energy, computing. And, more ominously, the Pentagon is exploring nano applications in a new generation of hi-tech weaponry....