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首页> 外文期刊>Physics Letters, A >Enhancement of ablation rate and production of colloidal nanoparticles by irradiation of metals with nanosecond pulsed laser in presence of external electric field
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Enhancement of ablation rate and production of colloidal nanoparticles by irradiation of metals with nanosecond pulsed laser in presence of external electric field

机译：通过在外电场存在下通过纳秒脉冲激光照射金属的消融率和生产胶体纳米粒子的增强

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摘要

This paper presents the results of experimental study on the effect of electric field on the ablation rate during the nanosecond pulsed laser ablation of aluminum and copper in deionized water. The effect of electric field strength on the material removal rate and its mechanisms were investigated both in the electric field parallel and perpendicular to the laser beam path schemes. The ablation rate was estimated by measuring the dimensions of craters on the target induced by laser. The crater dimensions and optical properties of the produced colloidal nanoparticles were characterized by means of optical microscopy and UV-Vis absorption spectroscopy, respectively. The results indicate that pulsed laser ablation in the presence of an electric field significantly leads to higher material removal rate. The experimental results also confirm that the crater geometry extremely depends on the direction of the electric field with respect to the laser beam direction. The UV-Vis spectra show that the nanoparticles production efficiency increases with increasing the electric field strength. (C) 2019 Elsevier B.V. All rights reserved.
机译：本文介绍了在去离子水中铝和铜的纳秒脉冲激光烧蚀过程中电场对电场效果的实验研究结果。在平行的电场和垂直于激光束路径方案的电场中研究了电场强度对材料去除速率及其机构的影响。通过测量激光诱导的靶的陨石剂的尺寸来估计消融率。通过光学显微镜和UV-Vis吸收光谱分别表征产生的胶体纳米粒子的火山口尺寸和光学性质。结果表明，在电场的存在下，脉冲激光消融显着导致更高的材料去除速率。实验结果还证实，火山口几何形状非常取决于电场相对于激光束方向的方向。 UV-Vis光谱表明，纳米颗粒的生产效率随着电场强度的增加而增加。 （c）2019 Elsevier B.v.保留所有权利。

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