A basic definition: Nanotechnology is the engineering of functional systems at the molecular scale. This covers both current work and concepts that are more advanced.In its original sense, 'nanotechnology' refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high performance products. Nanotechnology, in its traditional sense, means building things from the bottom up, with atomic precision. Nanomachines to build complex products, advanced nanotechnology sometimes referred to as molecular manufacturing will make use of positionally-controlled mechanochemistry guided by molecular machine systems.
