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Issue 16, 2012
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Direct atomic imaging and dynamical fluctuations of the tetrahedral Au20 cluster

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Abstract

We report real-space, atomic-resolution images of Au20 clusters obtained with the aberration-corrected Scanning Transmission Electron Microscopy. The proposed tetrahedral (FCC segment) pyramid structure is confirmed. The clusters cycle between isomers under the electron beam in the time-lapse images acquired. Disordered variants on the high symmetry forms are commonly observed. We believe that the direct experimental identification of these kinds of atomic structure, and the fluctuations between them, is fundamental to our understanding of nanoparticle structures, as well as applications such as heterogeneous catalysis.

Graphical abstract: Direct atomic imaging and dynamical fluctuations of the tetrahedral Au20 cluster

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Publication details

The article was received on 02 May 2012, accepted on 18 May 2012 and first published on 28 Jun 2012


Article type: Communication
DOI: 10.1039/C2NR31071F
Citation: Nanoscale, 2012,4, 4947-4949
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    Direct atomic imaging and dynamical fluctuations of the tetrahedral Au20 cluster

    Z. W. Wang and R. E. Palmer, Nanoscale, 2012, 4, 4947
    DOI: 10.1039/C2NR31071F

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