what is nano? how to obtain nano material ?
As has been said "nano" simply refers to a measurement on the order of 1e-9 metres. Nanoscience is any science dealing with objects at this scale, http://en.wikipedia.org/wiki/Nanotechnology" [Broken] is one that has been specifically engineered on the nanoscale and has at least one dimension between 1 and 100 nanometres.]
thank you very much it's better