期刊
APPLIED PHYSICS LETTERS
卷 97, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3488003
关键词
bubbles; capillarity; cavitation; II-VI semiconductors; laser ablation; nanofabrication; nanoparticles; Permalloy; self-assembly; wide band gap semiconductors; zinc compounds
We report the self-assembly of ZnO(x) (0 <= x <= 1) (and permalloy) nanoclusters into hollow nanoparticles using pulsed laser ablation of bulk Zn (or permalloy) in ethanol-water binary mixture. The self-assembly is due to the trapping of laser-produced nanoclusters by the interfaces of cavitation bubbles and the bonding of the nanoclusters by capillary attraction. It was found that the bubbles generated in the mixture have significantly longer lifetimes compared to water alone, which provide an increasing chance to absorb diffusive nanoclusters. The mixture could be adjusted by adding viscous surfactant that makes the pulsed laser ablation in liquid a promising method for the discovery and fabrication of other hollow geometries. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488003]
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