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Ortega Y, Dieker Ch, Jäger W, et al. Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods. Nanotechnology. 2010;21(22):225604doi: 10.1088/0957-4484/21/22/225604.
Ortega, Y., Dieker, C. h., Jäger, W., Piqueras, J., & Fernández, P. (2010). Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods. Nanotechnology, 21(22), 225604. https://doi.org/10.1088/0957-4484/21/22/225604
Ortega, Y, et al. "Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods." Nanotechnology vol. 21,22 (2010): 225604. doi: https://doi.org/10.1088/0957-4484/21/22/225604
Ortega Y, Dieker Ch, Jäger W, Piqueras J, Fernández P. Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods. Nanotechnology. 2010 Jun 04;21(22):225604. doi: 10.1088/0957-4484/21/22/225604. Epub 2010 May 07. PMID: 20453289.
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Nanotechnology. 2010 Jun 04;21(22):225604. doi: 10.1088/0957-4484/21/22/225604. Epub 2010 May 07.

Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods.

Nanotechnology

Y Ortega, Ch Dieker, W Jäger, J Piqueras, P Fernández

Affiliations

  1. Microanalysis of Materials, Institute of Materials Science, Christian-Albrechts-University of Kiel, Kiel, Germany.

PMID: 20453289 DOI: 10.1088/0957-4484/21/22/225604

Abstract

ZnO nanorods containing different hollow structures have been grown by a thermal evaporation-deposition method with a mixture of ZnS and SnO(2) powders as precursor. Transmission electron microscopy shows rods with rows of voids as well as rods with empty channels along the growth axis. The presence of Sn nanoprecipitates associated with the empty regions indicates, in addition, that these are generated by diffusion processes during growth, probably due to an inhomogeneous distribution of Sn. The mechanism of forming voids and precipitates appears to be based on diffusion processes similar to the Kirkendall effect, which can lead to void formation at interfaces of bulk materials or in core-shell nanostructures. In some cases the nanorods are ZnO tubes partially filled with Sn that has been found to melt and expand by heating the nanotubes under the microscope electron beam. Such metal-semiconductor nanostructures have potential applications as thermal nanosensors or as electrical nanocomponents.

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