The quest for inorganic fullerenes
- Univ. of Konstanz (Germany)
- Sungkyunkwan Univ., Suwon (Republic of Korea)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- National Univ., of Singapore (Singapore)
Experimental results of the search for inorganic fullerenes are presented. Mo nSm - and WnSm - clusters are generated with a pulsed arc cluster ion source equipped with an annealing stage. This is known to enhance fullerene formation in the case of carbon. Analogous to carbon, the mass spectra of the metal chalcogenide clusters produced in this way exhibit a bimodal structure. Moreover, the species in the first maximum at low mass are known to be platelets. The structure of the species in the second maximum is studied by anion photoelectron spectroscopy, scanning transmission electron microscopy, and scanning tunneling microcopy. All experimental results indicate a two-dimensional structure of these species and disagree with a three-dimensional fullerene-like geometry. A possible explanation for this preference of two-dimensional structures is the ability of a two-element material to saturate the dangling bonds at the edges of a platelet by excess atoms of one element. A platelet consisting of a single element only cannot do this. Likewise, graphite and boron might be the only materials forming nano-spheres because they are the only single element materials assuming two-dimensional structures.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725; GA 389/15-1
- OSTI ID:
- 1265808
- Journal Information:
- Journal of Applied Physics, Vol. 118, Issue 13; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Unsupervised Exploration of MoS2 Nanocluster Configurations: Structures, Energetics, and Electronic Properties
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journal | August 2019 |
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