Proceedings of International Conference on Applied Innovation in IT  ·  2026/06/12  ·  Vol. 14  ·  Issue 4  ·  pp. 527–538
Composition-Controlled Structure and Colloidal Stability of Surfactant-Free Gold-Copper Alloy Nanoparticles Synthesized by Picosecond Laser Ablation in Liquid
Jasim Al-Zanganawee, Hind Waleed Abdullah, Sarah Abbas Jasim, Tahseen Hussein Mubarak, Sorina Iftimie and Oana Brincoveanu
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Abstract
By using picosecond laser ablation in water. (PPLAL) (λ-1064 nm, E=500 mJ, and Pulse=2000), we made colloidal nanoparticles of gold (Au) and Au-Cu alloys in DI water. The impact of (Au) and Au-Cu alloys compositions on structure, particle morphology, and nanocolloidal stability was thoroughly examined. X-ray diffraction verified a single-phase fcc solid-solution across all compositions, with the (111) peak changing consistently from 38.77° (Au) to 41.55° (Au₅₀Cu₅₀), corresponding with Vegard-like lattice contraction from
Keywords
PPLAL Au-Cu Alloy Nps Colloidal Stability Vegard’s Law
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