The coalescence of supported gold nanoparticles induced by nanosecond laser irradiation

被引：50
|
作者：
Pan, H. [1 ]
Ko, S. H. [1 ]
Grigoropoulos, C. P. [1 ]
机构：
[1] Univ Calif Berkeley, Dept Mech Engn, Laser Thermal Lab, Berkeley, CA 94720 USA
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2008年 / 90卷 / 02期
关键词：
D O I：
10.1007/s00339-007-4320-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Gold nanoparticles supported on a quartz substrate are fabricated by e-beam lithography and subjected to nanosecond laser irradiation to induce coalescence. In combination with ex-situ scanning electron microscopy and optical extinction spectra, transmission is monitored in-situ to determine the characteristic coalescence time, the threshold fluence for the onset of coalescence and the produced particle morphology. Parallel molecular dynamics simulation is employed and shown to reasonably predict the coalescence time, thus explaining the experimental results.
引用
收藏
页码：247 / 253
页数：7
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