Nano-phase material is a general term to describe any substance made up of phases that have dimensions of the order of nanometers. An ultrafine single solid phase was at least one dimension is in the nanometre range, sizes are between 1–20 nm
The Nanoscale of nanotechnology is a general term relating to objects from 1 to 100 nm. Thus a nanosecond is one-billionth of one second; a nanometre (nm) is one-billionth of one metre, and so on.
Nanotechnology represents the design, characterisation, production, and application of structures, devices, and systems by controlling the shape and size of the Nanometre scale.’ Thus, nanotechnology products are those derived from the phenomena and physicochemical characteristics occurring at the dimension of less than 100nm.