During the FLL finals in The Netherlands (Benelux) I will demonstrate the Mindstorms NXT and a special for a museum custom build demonstration model.
This model of a Scanning Probe Microscopy (see wiki), will demonstrate how we can visualize a surface of single atoms on a computer screen (my NXT).
Here is a picture of how the process works. http://en.wikipedia.org/wiki/Scanning_tunneling_microscope
This is the link to my Brickshelf folder where I will post more pictures after the FLL event.