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Nanoparticle

A nanoparticle or ultrafine particle is usually defined as a particle of matter between 1 and 100 nanometres (nm) in diameter.[1][2]

Nanoparticle Media

  • TEM (a, b, and c) images of prepared mesoporous silica nanoparticles with mean outer diameter: (a) 20nm, (b) 45nm, and (c) 80nm. SEM (d) image corresponding to (b). The insets are a high magnification of mesoporous silica particle.

  • Idealized model of a crystalline nanoparticle of platinum, about 2 nm in diameter, showing individual atoms.

  • Nanostars of vanadium(IV) oxide (VO
    2    ) exhibiting a crystal clusters structure resembling that of desert roses

  • 1 kg of particles of 1 mm3 has the same surface area as 1 mg of particles of 1 nm3

  • Semiconductor nanoparticle (quantum dot) of lead sulfide with complete passivation by oleic acid, oleyl amine and hydroxyl ligands (size ~5nm)

References

  1. ↑ U.S. Environmental Protection Agency (): "Module 3: Characteristics of Particles Particle Size Categories". From the EPA Website.
  2. ↑ Vert, Michel. Terminology for biorelated polymers and applications (IUPAC Recommendations 2012) (in en). Pure and Applied Chemistry 84 (2) (2012-01-11). p. 377–410. doi:10.1351/PAC-REC-10-12-04.
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