Abstract: Nanotechnology is a branch of engineering that deals with the design and manufacture of extremely small electronic circuits and mechanical devices built at nano level of matter. It was first appeared at the later of the 20th century. Nanotechnology spans a wide variety of disciplines such as physics, chemistry, applied mathematics, material science, computer simulation/design science, electronics, engineering, biotechnology, genetics, protein engineering, biochemistry, biosciences. The properties of electronics, mechanics, magnetic and optics of nanometer materials have been changed greatly because of their particular surface effect, volume effect and quantum size effect. Nanotechnology was applied successfully in environment protection, ceramics,
textile, lubricant, electronics and information, chemical engineering, bioengineering and pharmacy, coatings, energy, auto and aviation after development of past several years. So nanotechnology has become one of the hottest topics in the scientific research field and are regarded as another industrial revolution in the 21th century.

Key words: nanometer materials, nanotechnology, application