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Nanoparticles are the fundamental components of the broad field of nanotechnology. Nanoparticles are microscopic particles with sizes ranging from 1nm to 100nm. The properties of the material change as their size approaches the nanoscale. The optical characteristics of nanoparticles are often surprising, and are one of their fundamental attractions. For example, gold nanoparticles have a wine red color as opposed to the traditional yellow. An inorganic nanotube is a cylindrical molecule often composed of metal oxides, or group III-Nitrides and morphologically similar to a carbon nanotube. Inorganic nanotubes have been observed to occur naturally in some mineral deposits. Examples include: tungsten (IV) sulfide (WS2), molybdenum disulfide (MoS2), and tin (IV) sulfide (SnS2).