Nanotechnology Terms

    1 nanometer is equal to one billionth of a meter (or one millionth of a millimeter), which is the current SI base unit of length. It can be written in scientific notations as 1X10⁹ m (engineering notation) or 1 E-9 m (exponential notation) . both meaning 1/1,000,000,000 meters.

    A nanoparticle (or nanopowder or nanocluster or nanocrystal) is a small particle with at least one dimension less than 100 nm.

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    Surface area is the measure of how much exposed area an object has. It is expressed in square units. If an object has flat faces, its surface area can be calculated by adding together the areas of its faces. Even objects with smooth surfaces, such as spheres, can have well-defined surface area.

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