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Issue 7, 2014
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Scanning tunnelling microscopy of epitaxial nanostructures

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Epitaxial nanostructures have generated a great deal of interest because of the applications in catalysis, photonics and nanoelectronics. To study the structure and electronic properties at the nanoscale, scanning tunnelling microscopy (STM) has proven a very effective technique due to its extraordinarily high spatial resolution. Growth modes of epitaxial nanostructures depend predominantly on the surface free energy of the deposited material, and that of the substrate onto which it is deposited, leading to layer-by-layer or island growth modes. The strain due to lattice mismatch plays an important role in the formation of semiconductor quantum dot islands via strain-induced transitions in the morphology of epitaxial nanoislands. Examples of the different growth modes observed with STM are presented in this review within a general framework that uses the surface and strain energies to understand the effects that govern nanostructure shapes. Some self-assembled oxide and metal nanostructures, as well as molecular networks, are also discussed.

Graphical abstract: Scanning tunnelling microscopy of epitaxial nanostructures

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Publication details

The article was received on 11 Dec 2013 and first published on 07 Feb 2014

Article type: Tutorial Review
DOI: 10.1039/C3CS60458F
Citation: Chem. Soc. Rev., 2014,43, 2226-2239
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    Scanning tunnelling microscopy of epitaxial nanostructures

    M. S. J. Marshall and M. R. Castell, Chem. Soc. Rev., 2014, 43, 2226
    DOI: 10.1039/C3CS60458F

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