Nanotechnology has become one of the most important and exciting fields in the forefront of engineering, physics, chemistry, and biology. Using technology operating at 1 billionth of a meter levels, it shows great promise for providing us in the near future with many breakthroughs that will change the direction of technological advances in a wide range of applications from chemcial to electronical to medical. This introduction to the subject of nanotechnology readers with a broad, practical overview of the subject and gives researchers in different areas an appreciation of developments in nanotechnology outside their own fields of expertise.