Nanotechnology, or sometimes nanotech as some people call it, refers to a field of applied science which focuses on the control of matter on an atomic and molecular scale. Generally nanotechnology deals with structures about 100 nanometers or smaller, and involves developing materials or devices within these small size range, isn't that amazing.
Nanotechnology is an extremely diverse and multidisciplinary field, ranging from novel extensions of conventional device physics, to completely new approaches based upon molecular self-assembly, to developing new materials with dimensions on the nanoscale, or the scale of nothing, even to speculation on whether we can directly control matter on the atomic scale.
Nanotechnology has the potential to create many new materials and devices with wide-ranging applications, such as in medicine, electronics, and energy production the list goes on and on and is only limited by imagination. On the other hand, nanotechnology raises many of the same issues as with any other new and developing technology, including concerns about the toxicity and environmental impact of nanomaterials, and their potential effects on global economics.
Check out this video from youtube about Nano technology, Enjoy....