Such nanotechnology involves engineering carbon-based polymer molecules, one-millionth the size of a grain of sand, that attach to fibers to wick away moisture and resist stains, water and static.

FORBES: Best Places for Business

Tokyo-based Haman Technologies is fielding its own cutting-edge desalination technology, based on innovative engineering rather than nanotechnology.

FORBES: Innovation: Water's Life Saver

From an engineering perspective, when it comes to making micro-machines, nanotechnology has a distinct advantage over electromagnetic motors.

CNN: Nanobots get to the heart of the matter