Nano particlesA nanoparticle is a type of fine particle with at least one dimension between 1-100 nanometres (nm).Nano technologyit is the design or production of systems or structures, having superior characteristics by manipulation of its size at nanometer scale. History Term was first used by Mr. R.Feynman in 1959 at American physical society The word nanotechnology was first used by N.Taniguchi at international conference on industrial production in 1974 Tokyo A book named vehicles of creation ;the arrival of nanotechnology era was published in 1984 written by E.Drexler 1987 first protein was engineered 1988 bout fifty students attended the ten-week course on "Nanotechnology and Exploratory engineering" taught by FI's president Eric Drexler at Stanford during the spring quarter. In 1990 first nanotechnology journal was published In 1991 first Nano technological program of National Scientific Fund started to operate in USA In 1992 first text book was published named Nano systems written by K.Eric.DrexlerApplications & future of nanotechnology 1) In medicine protein filled nanoparticles have shown ability to stimulate immune responses which can lead us to fast healing in near futurea) Nano diamondsThese are carbon nanoparticles, nanodimonds with protein molecules attached can be used to increase bone growth around joint implants2) Manufacturing and Materialsa) Synthetic skinb) A synthetic skin has been demonstrated just like human skin it has ability of self-healing & ability to sense pressure, the material is a composite of nickel nanoparticles and a polymer.3) Nanoparticle Applications in Energy and ElectronicsNanoparticles called Nanotetrapods combined with nanoparticles of carbon to develop low cost electrodes for fuel cells, replacing platinum needed for fuel cell catalysts which is really expensiveNano scale thin films on eyeglasses, computer and camera displays, windows, and other surfaces can make them water-repellent, antireflective, self-cleaning, resistant to ultraviolet light & electrically conductive Lightweight & flexible solar cells that can be fitted onto computer cases to power mobile electronic devices Information Technology applicationsNano scale transistors are faster more efficient and energy efficient in very near future computers entire memory may be stored on a tiny chip