Spectral features of colloidal solutions of elongated gold nanoparticles produced by laser ablation in aqueous solutions

Autor:	Oleg V. Uvarov, G. A. Shafeev, Yu. L. Kalachev, M. I. Zhilnikova, E. V. Barmina
Rok vydání:	2020
Předmět:	Colloid Materials science Aqueous solution Laser ablation Chemical engineering Colloidal gold Statistical and Nonlinear Physics Electrical and Electronic Engineering Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Zdroj:	Quantum Electronics. 50:608-612
ISSN:	1468-4799 1063-7818
Popis:	The extinction spectra of colloidal solutions of gold nanoparticles produced by laser ablation in water and aqueous solutions of salts using two near-IR lasers with pulse durations of 200 ns and 1 ps are experimentally investigated. The extinction spectrum of the particles formed by ablation in aqueous solutions is characterised by enhanced optical density in the red and IR regions. This feature is due to the formation of elongated gold nanoparticles, as confirmed by transmission electron microscopy. The surface images of a gold target subjected to multipulse laser ablation exhibit micron and submicron structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8771a7bbe44f690cd6dbfe55a77d286 https://doi.org/10.1070/qel17218 Zobrazit plný text záznamu