Abstract

Pulsed laser ablation in liquids is utilized for preparation of composite nanostructures on the basis of TixO2x-1 and Ag. Plates of bulk Ti and Ag immersed in the corresponding liquid serve as targets in the ablation procedure. A nanosecond Nd:YAG pulsed laser is employed as a source of irradiation. Its fundamental wavelength and the third and fourths harmonic are used both to fabricate and to change the chemical composition and the morphology of the nanostructures considered. The procedure for synthesis of complex nanostructures is performed following a specific sequence, namely, the consecutive laser ablation of the selected targets is followed by a post-ablation irradiation of the colloid obtained of the complex nanostructures. The changes in the characteristics of the complex nanostructures are indirectly evaluated based on the profile of the optical transmission spectra of the as-obtained colloids. The colloids’ properties are controlled by varying the laser beam parameters. Transmission electron microscopy (TEM) is applied for direct visualization of their shape. The chemical composition and the morphology were assessed by high-resolution TEM and SAED analyses.

Details

Title
Fabrication of aqueous colloids of TixO2x-1 and Ag composite nanostructures by means of pulsed laser processing
Author
Stankova, N E 1 ; Nikolov, A 1 ; Karashanova, D 2 ; Nedyalkov, N 1 ; Dikovska, A 1 ; Milenov, T 1 ; Ristoscu, C 3 ; Badiceanu, M 4 ; Mihailescu, I N 3 

 Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Blvd., Sofia 1784, Bulgaria 
 Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Acad. Georgy Bonchev Str., 1113 Sofia, Bulgaria 
 National Institute for Lasers, Plasma and Radiation Physics, PO Box MG-36, RO- 77125, Magurele, Ilfov, Romania 
 National Institute for Lasers, Plasma and Radiation Physics, PO Box MG-36, RO- 77125, Magurele, Ilfov, Romania; Faculty of Physics, University of Bucharest, RO-77125, Magurele, Ilfov, Romania 
Publication year
2021
Publication date
Mar 2021
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2511964557
Copyright
© 2021. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.