A low-temperature evaporation route for ZnO nanoneedles and nanosaws

H. J. Fan; R. Scholz; A. Dadgar; A. Krost; M. Zacharias

doi:10.1007/s00339-004-3080-5

A low-temperature evaporation route for ZnO nanoneedles and nanosaws

H. J. Fan^*, R. Scholz, A. Dadgar, A. Krost, M. Zacharias

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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.

Original language	English
Pages (from-to)	457-460
Number of pages	4
Journal	Applied Physics A: Materials Science and Processing
Volume	80
Issue number	3
DOIs	https://doi.org/10.1007/s00339-004-3080-5
Publication status	Published - Feb 2005
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Materials Science

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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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AU - Fan, H. J.

AU - Scholz, R.

AU - Dadgar, A.

AU - Krost, A.

AU - Zacharias, M.

PY - 2005/2

Y1 - 2005/2

N2 - 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.

AB - 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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A low-temperature evaporation route for ZnO nanoneedles and nanosaws

Abstract

ASJC Scopus Subject Areas

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