Morphology-tuned wurtzite-type ZnS nanobelts.

Zhongwu Wang, Luke L. Daemen, Yusheng Zhao, C. S. Zha, Robert T. Downs, Xudong Wang, Zhong Lin Wang, Russell J. Hemley

Research output: Contribution to journalArticle

276 Scopus citations

Abstract

Nanometre-sized inorganic dots, wires and belts have a wide range of electrical and optical properties, and variable mechanical stability and phase-transition mechanisms that show a sensitive dependency on size, shape and structure. The optical properties of the semiconductor ZnS in wurtzite structures are considerably enhanced, but the lack of structural stability limits technological applications. Here, we demonstrate that morphology-tuned wurtzite ZnS nanobelts show a particular low-energy surface structure dominated by the +/-[210] surface facets. Experiments and calculations show that the morphology of ZnS nanobelts leads to a very high mechanical stability to approximately 6.8 GPa, and also results in an explosive mechanism for the wurtzite-to-sphalerite phase transformation together with in situ fracture of the nanobelts. ZnS wurtzite nanobelts provide a model that is useful not only for understanding the morphology-tuned stability and transformation mechanism, but also for improving synthesis of metastable nanobelts with quantum effects for electronic and optical devices.

Original languageEnglish (US)
Pages (from-to)922-927
Number of pages6
JournalNature materials
Volume4
Issue number12
DOIs
StatePublished - Dec 2005
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Wang, Z., Daemen, L. L., Zhao, Y., Zha, C. S., Downs, R. T., Wang, X., Wang, Z. L., & Hemley, R. J. (2005). Morphology-tuned wurtzite-type ZnS nanobelts. Nature materials, 4(12), 922-927. https://doi.org/10.1038/nmat1522