'The text is lightly written but, underneath the entertaining gloss of anecdote and personal detail, this is actually an intensely serious and carefully constructed book, aimed at informing the educated public about science in general and nanotechnology in particular. It is attractively produced, with innumerable well-captioned coloured images … To my mind, Colm Durkan has succeeded in combining the accessible style of the best science journalists with the authority and vision that come fr...

This second edition of the book, initially written as an introductory text dealing with how electric currents behave at the nanometer scale, begins with a general description of electric currents at the macroscale. Then by considering the physical length scales relevant to electron flow, it is observed how the behavior of currents varies as they approach the nanoscale. A quantum description of electric current is covered as well as its relevance, with particular reference to defects, grain...