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(PbS)32 : A baby crystal

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2012

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Kiran, Boggavarapu
Kandalam, Anil K.
Rallabandi, Rameshu
Koirala, Pratik
Li, Xiang
Tang, Xin
Wang, Yi
Fairbrother, Howard
Bowen, Kit

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The Journal of Chemical Physics. American Institute of Physics (AIP). 2012, 136(2), 024317. ISSN 0021-9606. eISSN 1089-7690. Available under: doi: 10.1063/1.3672166

Zusammenfassung

Theoretical calculations based on density functional theory have found (PbS)32 to be the smallest cubic cluster for which its inner (PbS)4 core enjoys bulk-like coordination. Cubic (PbS)32 is thus a “baby crystal,” i.e., the smallest cluster, exhibiting sixfold coordination, that can be replicated to obtain the bulk crystal. The calculated dimensions of the (PbS)32 cluster further provide a rubric for understanding the pattern of aggregation when (PbS)32 clusters are deposited on a suitable surface, i.e., the formation of square and rectangular, crystalline nano-blocks with predictable dimensions. Experiments in which mass-selected (PbS)32 clusters were soft-landed onto a highly ordered pyrolytic graphite surface and the resulting aggregates imaged by scanning tunneling microscopy provide evidence in direct support of the computational results.

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ISO 690KIRAN, Boggavarapu, Anil K. KANDALAM, Rameshu RALLABANDI, Pratik KOIRALA, Xiang LI, Xin TANG, Yi WANG, Howard FAIRBROTHER, Gerd GANTEFÖR, Kit BOWEN, 2012. (PbS)32 : A baby crystal. In: The Journal of Chemical Physics. American Institute of Physics (AIP). 2012, 136(2), 024317. ISSN 0021-9606. eISSN 1089-7690. Available under: doi: 10.1063/1.3672166
BibTex
@article{Kiran2012-01-14cryst-49271,
  year={2012},
  doi={10.1063/1.3672166},
  title={(PbS)<sub>32</sub> : A baby crystal},
  number={2},
  volume={136},
  issn={0021-9606},
  journal={The Journal of Chemical Physics},
  author={Kiran, Boggavarapu and Kandalam, Anil K. and Rallabandi, Rameshu and Koirala, Pratik and Li, Xiang and Tang, Xin and Wang, Yi and Fairbrother, Howard and Ganteför, Gerd and Bowen, Kit},
  note={Article Number: 024317}
}
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    <dcterms:abstract xml:lang="eng">Theoretical calculations based on density functional theory have found (PbS)&lt;sub&gt;32&lt;/sub&gt; to be the smallest cubic cluster for which its inner (PbS)&lt;sub&gt;4&lt;/sub&gt; core enjoys bulk-like coordination. Cubic (PbS)&lt;sub&gt;32&lt;/sub&gt; is thus a “baby crystal,” i.e., the smallest cluster, exhibiting sixfold coordination, that can be replicated to obtain the bulk crystal. The calculated dimensions of the (PbS)&lt;sub&gt;32&lt;/sub&gt; cluster further provide a rubric for understanding the pattern of aggregation when (PbS)&lt;sub&gt;32&lt;/sub&gt; clusters are deposited on a suitable surface, i.e., the formation of square and rectangular, crystalline nano-blocks with predictable dimensions. Experiments in which mass-selected (PbS)&lt;sub&gt;32&lt;/sub&gt; clusters were soft-landed onto a highly ordered pyrolytic graphite surface and the resulting aggregates imaged by scanning tunneling microscopy provide evidence in direct support of the computational results.</dcterms:abstract>
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