what is nano technology?

It is very small scaled technologies. Nanoscience is the description of science on nano scale (1 nanometer = 10-9m), and nanotechnology is the use of nanoscience in technologies. Everything is build of atoms and the nanoscience has made it possible to move the atoms, which is changing the properties of the material. Nanoscience and technology are used in combination with ordinary science, for example in the study of medicine, electronics, chemistry, materials etc

robotics and technologies in the smallest sizes..

i think it is a science dealing with movement.