Laser ablation in liquid (LAL) is known to be a promising method for synthesizing metal nanoparticles. In this study, gold and silver nanoparticles were fabricated by ultrasonic-assisted LAL. Gold and silver plates were ablated using a neodymium-doped yttrium aluminum garnet (Nd:YAG) laser, with a wavelength of 532 nm and energy of 26.4 J cm^–2, in distilled water in the presence and absence of an ultrasonic field. The fabricated nanoparticle colloidal solution was analyzed with an ultraviolet–visible (UV–vis) spectrometer, a transmission electron microscope (TEM) with energy-dispersive X-ray spectroscopy (EDS), and ζ-potential measurement. The craters on the silver plates were analyzed by a scanning electron microscope (SEM), a laser microscope, and MATLAB to observe their morphology and calculate the volume to obtain the concentration of the fabricated nanoparticle solution. Optical emissions were observed to study the characteristics of the laser. The results showed that ultrasonic-assisted LAL has considerable potential for fabricating superior metal nanoparticles.

中文翻译：

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在液体中通过激光烧蚀超声增强金属纳米粒子的制备

已知液体中的激光烧蚀（LAL）是一种有前途的合成金属纳米粒子的方法。在这项研究中，金和银纳米粒子是通过超声辅助LAL制备的。使用掺钕钇铝石榴石（Nd：YAG）激光烧蚀金和银板，激光波长为532 nm，能量为26.4 J cm ^–2，在有无超声波场的蒸馏水中。使用紫外可见光谱仪，具有能量色散X射线能谱仪（EDS）的透射电子显微镜（TEM）和ζ电位测量仪分析了制成的纳米粒子胶体溶液。通过扫描电子显微镜（SEM），激光显微镜和MATLAB对银板上的凹坑进行分析，以观察其形态并计算体积以获得所制备的纳米颗粒溶液的浓度。观察到光发射以研究激光器的特性。结果表明，超声辅助的LAL具有制造优质金属纳米粒子的巨大潜力。