Laser-assisted generation of elongated Au nanoparticles in aqueous solutions of divalent ions

One-step laser-assisted fabrication of elongated Au nanoparticles (NPs) and their subsequent fragmentation and agglomeration are experimentally studied. The generation of elongated Au NPs is carried out via laser ablation of a solid Au target in water using an ytterbium-doped fiber laser source with...

Full description

Saved in:
Bibliographic Details
Published inGold bulletin (World Gold Council) Vol. 53; no. 3-4; pp. 129 - 134
Main Authors Zhilnikova, M. I., Barmina, E. V., Shafeev, G. A., Pridvorova, S. M., Uvarov, O. V.
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.12.2020
Springer Nature B.V
Subjects
Absorption
Aqueous solutions
Calcium
Calcium chloride
Calcium sulfate
Chemistry and Materials Science
Doped fibers
Elongation
Exposure
Fabrication
Fiber lasers
Gold
Laser ablation
Lasers
Magnesium
Materials Science
Metallic Materials
Nanoparticles
Original Paper
Pulse duration
Pulsed lasers
Radiation
Ytterbium
Liquid
Laser ablation
Elongated nanoparticles
Plasmon resonance
Online AccessGet full text

Cover

More Information
Summary:One-step laser-assisted fabrication of elongated Au nanoparticles (NPs) and their subsequent fragmentation and agglomeration are experimentally studied. The generation of elongated Au NPs is carried out via laser ablation of a solid Au target in water using an ytterbium-doped fiber laser source with pulse duration of 200 ns and pulse energy of 1 mJ. Extinction spectrum of the resulting particles exhibits an increase in the absorption in visible red and near IR spectral regions. This change in absorption is accounted for by the longitudinal plasmon resonance of the electrons in elongated Au NPs and is corroborated by the TEM images. The effect of additional laser exposure on the elongated Au NPs produced using this method is studied, as well. Laser pulse energies and exposure times are varied. Possible processes of laser-assisted formation of elongated Au NPs in aqueous solutions of calcium chloride and magnesium sulfate and their following interaction with pulsed laser radiation are discussed.
ISSN:2364-821X
2190-7579
DOI:10.1007/s13404-020-00281-2