There is a great article on the NZ Herald website this morning about a Dunedin company called Izon.
Their game is in making machines that measure, analyze and control small particles, right down to a single particle, which is pretty incredible. As the article says, scientists have been trying to find the next big nanoparticle application for a while now, and Izon's idea seems like a good one because it will allow them access into all of the broad research that's taking place in this area, which includes medical diagnostics, environmental diagnostics, nanoparticle measurement and biomolecule analysis to name a few. There are many more.
Izon plan to shrink their device down to the size of a cellphone in the near future, and I think that there are really exciting prospects in the area of rapid diagnostics, where a small device could be taken into remote, poverty stricken area's to quickly and cheaply diagnose illnesses. The right treatment could then be prescribed which saves time on lengthy lab analyses.
Awesome idea, good luck to them!