Business leaders often talk about thinking big. But when it comes to nanotech stocks, the future is all about focusing on the small things.According to the European Commission, nanotechnology represents a scientific and engineering discipline that’s “devoted to designing, producing, and using structures, devices, and systems by manipulating atoms and molecules at nanoscale.” Nanoscales refer to having one or more dimensions of the order of 100 nanometers (or 100 millionth of a millimeter).Stated differently ...