Generation of titanium-oxide nanoparticles in liquid using a high-power, high-brightness continuous-wave fiber laser
Generation of titanium-oxide nanoparticles in liquid using a high-power, high-brightness continuous-wave fiber laser
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DOI：
10.1007/s00339-008-4448-8
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发表时间：
2008-06-01
影响因子：
2.7
通讯作者：
Li, Lin
中科院分区：
文献类型：
--
作者：
Abdolvand, A.;Khan, S. Z.;Li, Lin
以前的研究激光辅助纳米材料形成的液体集中在使用脉冲激光烧蚀的金属。据我们所知，我们首次报道了通过高功率高亮度连续波光纤激光烧蚀液体中的钛来制造纳米颗粒。分析揭示了钛氧化物的球形纳米颗粒的产生，其直径主要在5 nm和60 nm之间。结晶纳米粒子的形成机制，蒸发金属的自组织脉动的基础上，提出。这可以解释由于源的高平均功率和亮度而观察到的显著效率增益。
Previous studies on laser-assisted nanomaterial formation in liquids have focused on using pulsed laser ablation of metals. We report, for the first time to our knowledge, the fabrication of nanoparticles via high-power high-brightness continuous-wave fiber laser ablation of titanium in liquids. Analysis revealed the generation of spherical nanoparticles of titanium-oxide ranging mainly between 5 nm and 60 nm in diameter. A mechanism of formation for crystallized nanoparticles, based on the self-organized pulsations of the evaporated metal, is proposed. This may account for the observed substantial efficiency gain owing to the high average power and brightness of the source.