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  2. Nanotechnology - Wikipedia

    en.wikipedia.org/wiki/Nanotechnology

    Nanotechnology is the science and engineering of functional systems at the molecular scale. In its original sense, nanotechnology refers to the projected ability to construct items from the bottom up making complete, high-performance products. One nanometer (nm) is one billionth, or 10 −9, of a meter.

  3. Nanometre - Wikipedia

    en.wikipedia.org/wiki/Nanometre

    The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm), or nanometer (American spelling), is a unit of length in the International System of Units (SI), equal to one billionth (short scale) or one thousand million (long scale) of a meter (0.000000001 m) and to 1000 picometres.

  4. Nanotechnology for water purification - Wikipedia

    en.wikipedia.org/wiki/Nanotechnology_for_water...

    Currently nanotechnology plays a vital role in water purification techniques. Nanotechnology is the process of manipulating atoms on a nanoscale. [1] In nanotechnology, nanomembranes are used with the purpose of softening the water and removal of contaminants such as physical, biological and chemical contaminants. There are variety of ...

  5. Nanometrology - Wikipedia

    en.wikipedia.org/wiki/Nanometrology

    Control of the critical dimensions are the most important factors in nanotechnology. Nanometrology today, is to a large extent based on the development in semiconductor technology. Nanometrology is the science of measurement at the nanoscale level. Nanometer or nm is equivalent to 10^-9 m.

  6. Nanofiltration - Wikipedia

    en.wikipedia.org/wiki/Nanofiltration

    Nanofiltration is a membrane filtration process that uses nanometer sized pores through which particles smaller than about 1–10 nanometers pass through the membrane. Nanofiltration membranes have pore sizes of about 1–10 nanometers, smaller than those used in microfiltration and ultrafiltration, but a slightly bigger than those in reverse ...

  7. Nanoparticle - Wikipedia

    en.wikipedia.org/wiki/Nanoparticle

    A nanoparticle or ultrafine particle is a particle of matter 1 to 100 nanometres (nm) in diameter. [1] [2] The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. [2]: 394 At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

  8. Glossary of nanotechnology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nanotechnology

    A generic term to describe nano scale electrical/mechanical devices. Nanoelectronics Electronics on a nanometer scale, whether made by current techniques or nanotechnology; includes both molecular electronics and nanoscale devices resembling today's semiconductor devices. Nanofabrication Construction of items using assemblers and stock molecules.

  9. Orders of magnitude (molar concentration) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(molar...

    nM: 5 nM: inhaled osmium tetroxide is immediately dangerous to life or health (1 mg Os/m 3) [13] 10 −8: 10 −7: 101 nM: hydronium and hydroxide ions in pure water at 25 °C (pK W = 13.99) [14] 10 −6: μM: 10 −5: 10 −4: 180–480 μM: normal range for uric acid in blood [10] 570 μM