Excellent by Dr. Florian Glodeanu

Nanotechnology, in its traditional sense, means building things from the bottom up, with atomic precision. This theoretical capability was envisioned as early as 1959 by the physicist Richard Feynman: “I want to build a billion tiny factories, models of each other, which are manufacturing simultaneously. . . The principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom. It is not an attempt to violate any laws; it is something, in principle, that can be done; but in practice, it has not been done because we are too big”

http://www.crnano.org/whatis.htm

 The term “nanotechnology” was invented by Professor Norio Taniguchi at the University of Tokyo in 1971. The original definition, “Nano-technology' is the production technology to get the extra high accuracy and ultrafine dimensions, i.e. the preciseness and fineness on the order of 1 nm (nanometer), 10-9 meter in length.”

http://www.nanowerk.com/nanotechnology/introduction/introduction_to_nanotechnology_1.php

The birth of nanotechnology originated in 1959 and is linked to a speech "There's plenty of room at the bottom" given by Richard Feynman at an American Physical Society meeting at Caltech (California Institute of Technology) on December 29 in 1959. However, the word "nanotechnology" itself may have remained unused until 1974 when Norio Taniguchi of Tokyo University of Science used it to describe the level of precision in manufacturing materials at the nanometer scale.

The science of  nanotechnology is  attributed to Nobel Prize winner Richard Feynmanin 1959.During one of his lectures,hHe say “The principles of physics, as far as I can see, do not speak against the possibility of manoeuvring things atom by atom”.Taniguchi uses term "nano-technology" in paper on ion-sputter machining. 1974

Excellent by Dr. Florian Glodeanu

Thanks Dr. Florian Glodeanu,Boris Jovanović and Sir Hassan Alshamsi for your kind answers. Plz If some one can send me a paper referring the words you are saying I want to put the History of nanotech in intro of my thesis..!

Dr. @Botan Jawdat Abdullah sir thanks for you kind attention towards my question and thanks for the useful helping material.