University of Kashan Journal of Nanostructures 2251-7871 16 1 2026 01 01 Synthesis and Study of ZnO, NiO and Fe2O3: Properties and Medical Applications 956 965 115369 10.22052/JNS.2026.01.085 EN Huda Musa Mutlaq College of Sciences, Department of physics Wasit University, Wasit, Iraq Ahmed K. Abbas College of Sciences, Department of physics Wasit University, Wasit, Iraq Journal Article 2025 09 23 In this work, pulsed laser ablation with 500 and 700 mJ lasers was used to synthesis metals oxide nanoparticles from Zn, Ni, and Fe. Colloidal solutions of these metal oxides were obtained by immersing the metal in deionized water. Structural analysis, including X-ray diffraction and scanning electron microscopy, was performed. Atomic absorption spectroscopy was used to determine the initial concentration of the material. This initial concentration was then diluted into several sub-concentrations for antibacterial testing. The effects of the nanoparticles against both Gram-positive and Gram-negative bacteria were investigated. https://jns.kashanu.ac.ir/article_115369_fba052675361957fff74b2be0d55f94c.pdf