تحضير ودراسة بعض الخصائص الفيزيائية لجسيمات الفضة النانوية باستعمال تقنية الاستئصال الليزري في السوائل

الملخص EN

In this paper, the pulsed ablation laser method (APL) was used to obtain silver nanoparticles from material silver, and one of the first signs indicating the production or generation of nanoparticles using the pulsed laser is the change in the color of the solution for the sample because of concentration of nanoparticles increasing.

in our study, deionized distilled water with a volume of 5 ml was used to prepare the samples with energy (300, 500) mj.

with number of pulsed (50, 100, 150, 200) pulse respectively.

we observed change in color of solution to a dark yellowish color that means obtained silver nanoparticles.

in another side study the obsorbancy and transmission by using u-visible spectroscopy, the peaks of all samples were at wave length at 400 nm this confirms that nanoparticles have been obtained from silver material.

the mean energy gab calculated for direct transition allowed of the samples are 2.94 eV.