Journal
APPLIED PHYSICS LETTERS
Volume 84, Issue 2, Pages 287-289Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1639514
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ZnO nanocoral reefs and nanofibers are synthesized on the glass substrate dip coated with ZnO seed with nanoparticles with an average size of 5 nm under a hydrothermal reaction. The ratios of length to diameter for the former and the latter are determined to be 100 and 1000, respectively. In addition, we found that a threshold power density for UV lasing action could be remarkably reduced from 40 kW/cm(2) for the nanocoral reefs to 8 kW/cm(2) for the nanofibers by increasing the cavity length of ZnO nanowires. (C) 2004 American Institute of Physics.
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