{"id":4998,"date":"2026-09-22T10:50:44","date_gmt":"2026-09-22T07:50:44","guid":{"rendered":"https:\/\/en.ilps.uobaghdad.edu.iq\/?p=4998"},"modified":"2026-09-22T11:10:25","modified_gmt":"2026-09-22T08:10:25","slug":"the-institute-of-laser-for-postgraduate-studies-discusses-a-masters-thesis-titled-preparation-of-silver-nanoparticles-via-pulsed-laser-ablation-technique","status":"publish","type":"post","link":"https:\/\/en.ilps.uobaghdad.edu.iq\/?p=4998","title":{"rendered":"The Institute of Laser for Postgraduate Studies discusses a Master&#8217;s thesis titled: &#8220;Preparation of Silver Nanoparticles via Pulsed Laser Ablation Technique&#8221;."},"content":{"rendered":"<div>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">A Master&#8217;s thesis submitted by student Fatima Mohammed Jassb, titled:<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">&#8220;Preparation of Silver Nanoparticles Using Pulsed Laser Ablation Technique and Studying the Effect of Number of Pulses on Material Characterization and Using Silver Nanoparticles as Water Treatment and Inhibitor for Staphylococcus aureus Growth&#8221;<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">was discussed at the Institute of Laser for Postgraduate Studies &#8211; University of Baghdad, under the supervision of Asst. Prof. Dr. Hanan Jaafar Taher.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">This study aims to prepare silver nanoparticles using pulsed laser ablation technique at different numbers of pulses (1000, 2000, and 3000) and energies (100, 150, and 200) mJ from a less toxic silver plate in two types of liquids, deionized water and ethanol.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">In addition, the effect of silver nanoparticles on blue dye pollutant in water was studied, as well as its spatial inhibition of bacterial growth.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">The results showed that silver nanoparticles prepared at (3000) pulses and energy of (150) mJ are considered the best catalyst for the degradation of blue dye in water after exposure to 10 W light, and also the best and highest spatial bacterial growth inhibition against Staphylococcus aureus, where the spatial inhibition of the colony reached 24 mm.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">X-ray diffraction technique proved the existence of silver nanoparticles peak at diffraction angle 38\u00b0 and plane (111) for the cubic crystal structure, and also showed a decrease in crystal size with increasing laser pulses.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">The study showed the shape of silver nanoparticles as spherical with uniform distribution. The thin film composition of silver nanoparticles deposited on a glass slide consists of the following elements (Silicon, Calcium, Sodium, Magnesium, and Silver) which were confirmed and detected using Scanning Electron Microscopy (SEM) and analysis.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">According to Atomic Force Microscopy (AFM) technique and 2D and 3D images, the silver nanoparticles appeared spherical and brown in color. The results also showed an increase in the roughness rate of silver nanoparticles with increasing number of laser pulses, as well as an increase in the volumetric rate of particles and RMS.<\/span><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><\/h6>\n<h6 dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-size: 16px;\">The UV-Visible spectroscopy results showed the optical properties of silver nanoparticles prepared in deionized water, specifically absorbance and transmittance at wavelength (400) nm, while absorbance and transmittance of silver nanoparticles prepared in ethanol were at wavelength (200) nm. The results also showed increased absorbance with increasing number of laser pulses and decreased transmittance with increasing pulses.<\/span><\/h6>\n<\/div>\n<div data-smartmail=\"gmail_signature\">\n<div dir=\"ltr\">\n<div class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" class=\"wpa-warning wpa-image-missing-alt alignnone  wp-image-5001\" src=\"https:\/\/en.ilps.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/85\/2026\/09\/814998765_1593331942591883_8294712542591054620_n-300x165.jpg\" alt=\"\" width=\"533\" height=\"293\" data-warning=\"Missing alt text\" srcset=\"https:\/\/en.ilps.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/85\/2026\/09\/814998765_1593331942591883_8294712542591054620_n-300x165.jpg 300w, https:\/\/en.ilps.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/85\/2026\/09\/814998765_1593331942591883_8294712542591054620_n.jpg 590w\" sizes=\"auto, (max-width: 533px) 100vw, 533px\" \/><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A Master&#8217;s thesis submitted by student Fatima Mohammed Jassb, titled: &#8220;Preparation of Silver Nanoparticles Using Pulsed Laser Ablation Technique and &#8230; <a class=\"cz_readmore\" href=\"https:\/\/en.ilps.uobaghdad.edu.iq\/?p=4998\"><i class=\"fa czico-132-arrows-8\" aria-hidden=\"true\"><\/i><span>more<\/span><\/a><\/p>\n","protected":false},"author":36,"featured_media":5002,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"categories":[20,4,7,16],"tags":[],"class_list":["post-4998","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sdg4","category-latest-news","category-news","category-sustainability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Institute of Laser for Postgraduate Studies discusses a Master&#039;s 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