Abstract Characteristics of colloidal aluminum nanoparticles prepared by nanosecond pulsed laser ablation in deionized water in presence of parallel external electric field
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Characteristics of colloidal aluminum nanoparticles prepared by nanosecond pulsed laser ablation in deionized water in presence of parallel external electric field

机译:在平行外电场存在下去离子水中纳秒脉冲激光烧蚀制备的胶体铝纳米粒子的特征

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Abstract In this paper, we investigate experimentally the effect of electric field on the size, optical properties and crystal structure of colloidal nanoparticles (NPs) of aluminum prepared by nanosecond Pulsed Laser Ablation (PLA) in deionized water. The experiments were conducted for two different conditions, with and without the electric field parallel to the laser beam path and the results were compared. To study the influence of electric field, two polished parallel aluminum metals plates perpendicular to laser beam path were used as the electrodes. The NPs were synthesized for target in negative, positive and neutral polarities. The colloidal nanoparticles were characterized using the scanning electron microscopy (SEM), UV–vis absorption spectroscopy and X-ray Diffraction (XRD). The results indicate that initial charge on the target has strong effect on the size properties and concentration of the synthesized nanoparticles. The XRD patterns show that the structure of produced NPs with and without presence of electric field is Boehmite (AlOOH). Highlights ? Laser ablation of aluminum target in deionized water was performed using a ns Nd:YAG laser. ? The experiments were conducted in the presence of an external electric field parallel to the laser beam path. ? The average size of the NPs decreases with increasing the electric field strength. ? The formation efficiency of colloidal NPs depends on two factors i.e. the seed electrons and dynamic of charged-particle. ? Under an applied electric field, synthesized NPs with Boehmite crystal (grown along a specific direction) are formed. ]]>
机译:<![CDATA [ 抽象 在本文中,我们调查实验的大小的电场的效果,光学性能和铝的胶态纳米颗粒(NP)的晶体结构制备纳秒脉冲激光烧蚀(PLA)在去离子水。实验是针对两个不同的条件下进行的,有和没有平行于激光束路径的电场,结果进行了比较。为了研究电场的影响下,2抛光平行铝金属板垂直于激光束路径被用作电极。所述纳米粒子被用于在负,正和中性极性目标合成。使用扫描电子显微镜(SEM),UV-vis吸收光谱和X-射线衍射(XRD)的胶体纳米粒子进行了表征。结果表明,在目标初始充电对尺寸属性和浓度合成的纳米颗粒的强烈的影响。的X射线衍射图谱表明,具有和不具有电场的存在下生产的NP的结构是勃姆石(AlOOH的) 亮点 是使用纳秒的Nd执行在去离子水中铝靶的激光烧蚀。第> 实验在外部电场平行的存在于激光束路径进行 <?CE:对ID = “pr0030” 视图= “所有”>的AVERA的NP的GE大小随所述电场强度减小 胶体纳米颗粒的形成效率取决于两个因素,即带电粒子的所述种子电子和动态 在施加电场时,合成的NP与勃姆石晶体(沿特定方向上生长)形成 ]]>

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