Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation

This work presents a method, based on measurements of the optical extinction spectra, to determine the size of spherical gold nanoparticles produced using the femtosecond laser ablation process in deionized water. By using an improved theoretical model that modifies the contribution of the free elec...

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Detalles Bibliográficos
Autores principales: Torchia, Gustavo Adrián, Scaffardi, Lucía Beatriz, Méndez, C., Moreno, P., Tocho, Jorge Omar, Roso, Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Exactas
Física
Ingeniería
Nanocrystals, nanoparticles, and nanoclusters
Laser-beam impact phenomena
X-ray, γ-ray, and particle generation
High-speed techniques (microsecond to femtosecond)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130743
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130743
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Ingeniería
Nanocrystals, nanoparticles, and nanoclusters
Laser-beam impact phenomena
X-ray, γ-ray, and particle generation
High-speed techniques (microsecond to femtosecond)
spellingShingle Ciencias Exactas
Física
Ingeniería
Nanocrystals, nanoparticles, and nanoclusters
Laser-beam impact phenomena
X-ray, γ-ray, and particle generation
High-speed techniques (microsecond to femtosecond)
Torchia, Gustavo Adrián
Scaffardi, Lucía Beatriz
Méndez, C.
Moreno, P.
Tocho, Jorge Omar
Roso, Luis
Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
topic_facet Ciencias Exactas
Física
Ingeniería
Nanocrystals, nanoparticles, and nanoclusters
Laser-beam impact phenomena
X-ray, γ-ray, and particle generation
High-speed techniques (microsecond to femtosecond)
description This work presents a method, based on measurements of the optical extinction spectra, to determine the size of spherical gold nanoparticles produced using the femtosecond laser ablation process in deionized water. By using an improved theoretical model that modifies the contribution of the free electrons to the dielectric function introducing a size-dependent term, it is possible to fit the full experimental extinction spectrum considering a certain size distribution. Additionally, in order to obtain complementary measurements of the size distribution, TEM analysis was performed. The results obtained showed that the predominant nanoparticle size distribution ranges from 1 to 11 nm in terms of radii. An optical extinction measurement together with an appropriate theoretical model based on Mie’s theory represents a simple, low-cost, fast and easy method to describe a multimodal size distribution of spherical gold nanoparticles.
format Articulo
Articulo
author Torchia, Gustavo Adrián
Scaffardi, Lucía Beatriz
Méndez, C.
Moreno, P.
Tocho, Jorge Omar
Roso, Luis
author_facet Torchia, Gustavo Adrián
Scaffardi, Lucía Beatriz
Méndez, C.
Moreno, P.
Tocho, Jorge Omar
Roso, Luis
author_sort Torchia, Gustavo Adrián
title Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
title_short Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
title_full Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
title_fullStr Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
title_full_unstemmed Optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
title_sort optical extinction for determining the size distribution of gold nanoparticles fabricated by ultra-short pulsed laser ablation
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/130743
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