Nanoparticle formation in a cavitation bubble after pulsed laser ablation in liquid studied with high time resolution small angle x-ray scattering
Nanoparticle formation in a cavitation bubble after pulsed laser ablation in liquid studied with high time resolution small angle x-ray scattering
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DOI：
10.1063/1.4750250
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发表时间：
2012-09-03
影响因子：
4
通讯作者：
Barcikowski, Stephan
中科院分区：
文献类型：
--
作者：
Ibrahimkutty, Shyjumon;Wagener, Philipp;Barcikowski, Stephan
我们用时间分辨小角X射线散射研究了脉冲激光烧蚀液体后纳米粒子的形成。激光烧蚀水中的金靶产生空化气泡，在气泡最大扩展时可以识别出两种不同的粒子：(I)直径约8-10 nm的初级粒子，其浓度梯度从靶开始，在自由液体中也可在空化气泡之外找到；(Ii)直径在45 nm范围内的次生粒子，其浓度在空化泡的上部最高，但不能渗透到液体中。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.4750250]
We investigated nanoparticle formation after pulsed laser ablation in liquid using time-resolved small angle x-ray scattering. Laser ablation of a gold target in water induces a cavitation bubble in which two different particle species could be identified at maximum bubble extension: (i) primary particles of about 8-10 nm diameter, which show a smooth concentration gradient starting from the target and can also be found outside the cavitation bubble in the free liquid and (ii) secondary particles in the range of 45 nm diameter which have highest concentration in the upper part of the cavitation bubble but do not penetrate into the liquid. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4750250]