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A low-temperature evaporation route for ZnO nanoneedles and nanosaws

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Abstract

A low-temperature (550 °C) catalyst-free route has been applied to fabricate ZnO nanoneedles and nanosaws via evaporation of metallic Zn powder. The nanoneedles are vertically aligned on GaN(0001)/Si(111) substrates. Based on electron-microscopy observations, we postulate that the needles grew from the closely stacked ZnO columnar grains, which were formed with 〈0001〉 texture in an early stage. The uniquely shaped ZnO nanosaws were found in a large quantity under a similar low-temperature growth condition. In addition, single-crystalline micrometer saws were also obtained under an increased Zn vapor supersaturation by changing the sample configuration.

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Authors and Affiliations

  1. Max Planck Institute of Microstructure Physics, Weinberg 2, 06120, Halle, Germany

    H.J. Fan, R. Scholz & M. Zacharias

  2. Institute of Experimental Physics, Otto-von-Guericke University, 39016, Magdeburg, Germany

    A. Dadgar & A. Krost

Authors
  1. H.J. Fan
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  2. R. Scholz
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  3. A. Dadgar
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  4. A. Krost
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  5. M. Zacharias
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Corresponding author

Correspondence to H.J. Fan.

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PACS

81.07.-b; 81.05.Dz; 78.67.-n; 68.70.+w; 81.16.Be

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Fan, H., Scholz, R., Dadgar, A. et al. A low-temperature evaporation route for ZnO nanoneedles and nanosaws. Appl. Phys. A 80, 457–460 (2005). https://doi.org/10.1007/s00339-004-3080-5

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  • DOI: https://doi.org/10.1007/s00339-004-3080-5

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