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      The role of grain size on the thermal instability of nanostructured metal oxides used in gas sensor applications and approaches for grain-size stabilization

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      Progress in Crystal Growth and Characterization of Materials
      Elsevier BV

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          The kinetics of precipitation from supersaturated solid solutions

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            One-Dimensional Nanostructures: Synthesis, Characterization, and Applications

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              Size matters: why nanomaterials are different.

              Gold is known as a shiny, yellow noble metal that does not tarnish, has a face centred cubic structure, is non-magnetic and melts at 1336 K. However, a small sample of the same gold is quite different, providing it is tiny enough: 10 nm particles absorb green light and thus appear red. The melting temperature decreases dramatically as the size goes down. Moreover, gold ceases to be noble, and 2-3 nm nanoparticles are excellent catalysts which also exhibit considerable magnetism. At this size they are still metallic, but smaller ones turn into insulators. Their equilibrium structure changes to icosahedral symmetry, or they are even hollow or planar, depending on size. The present tutorial review intends to explain the origin of this special behaviour of nanomaterials.
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                Author and article information

                Journal
                Progress in Crystal Growth and Characterization of Materials
                Progress in Crystal Growth and Characterization of Materials
                Elsevier BV
                09608974
                December 2012
                December 2012
                : 58
                : 4
                : 167-208
                Article
                10.1016/j.pcrysgrow.2012.07.001
                81400288-269c-47de-bbce-d65873b18b22
                © 2012

                http://www.elsevier.com/tdm/userlicense/1.0/

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