Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 78, Issue 3, Pages 299-301Publisher
SPRINGER
DOI: 10.1007/s00339-003-2286-2
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We have succeeded in synthesizing ZnO nanorods by pulsed-laser ablation at comparatively high gas pressures without using a catalyst. The nanorods had an average size of 300 nm and a length of about 6 mum. Stimulated emission was observed from the nanorods at 388 nm by optical pumping. As a catalyst was not used in our method, nanorod growth was not controlled by the vapor-liquid-solid (VLS) mechanism. We found that nanoparticles formed by condensation of ablated particles in the laser ablation plume play an important role in nanorod growth.
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