"Cool".  This nanotechnology thing is amazing....one of the hottest new areas in Physics.  My cousin's kid told me about it a few years ago and I had no clue, sounded like complete fantasy.  My undergrad degree was in Physics, and if I had to go back to it, I'd hop on that baby in a nanosecond.  Defi-Natalie the way of the future.  Tell all of your aspiring, scientifically oriented children to check it out.  Let's see, in the 50's it was Plastics....now it's Nanotechnology.  Yikes.