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Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition
Nanocomposite systems and nanoparticle (NP) films are crucial for many applications and research fields. The structure-properties correlation raises complex questions due to the collective structure of these systems, often granular and porous, a crucial factor impacting their effectiveness and perfo...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5746932/ https://www.ncbi.nlm.nih.gov/pubmed/29236058 http://dx.doi.org/10.3390/nano7120442 |
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author | Cavaliere, Emanuele Benetti, Giulio Van Bael, Margriet Winckelmans, Naomi Bals, Sara Gavioli, Luca |
author_facet | Cavaliere, Emanuele Benetti, Giulio Van Bael, Margriet Winckelmans, Naomi Bals, Sara Gavioli, Luca |
author_sort | Cavaliere, Emanuele |
collection | PubMed |
description | Nanocomposite systems and nanoparticle (NP) films are crucial for many applications and research fields. The structure-properties correlation raises complex questions due to the collective structure of these systems, often granular and porous, a crucial factor impacting their effectiveness and performance. In this framework, we investigate the optical and morphological properties of Ag nanoparticles (NPs) films and of Ag NPs/TiO(2) porous matrix films, one-step grown by supersonic cluster beam deposition. Morphology and structure of the Ag NPs film and of the Ag/TiO(2) (Ag/Ti 50-50) nanocomposite are related to the optical properties of the film employing spectroscopic ellipsometry (SE). We employ a simple Bruggeman effective medium approximation model, corrected by finite size effects of the nano-objects in the film structure to gather information on the structure and morphology of the nanocomposites, in particular porosity and average NPs size for the Ag/TiO(2) NP film. Our results suggest that SE is a simple, quick and effective method to measure porosity of nanoscale films and systems, where standard methods for measuring pore sizes might not be applicable. |
format | Online Article Text |
id | pubmed-5746932 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-57469322018-01-03 Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition Cavaliere, Emanuele Benetti, Giulio Van Bael, Margriet Winckelmans, Naomi Bals, Sara Gavioli, Luca Nanomaterials (Basel) Article Nanocomposite systems and nanoparticle (NP) films are crucial for many applications and research fields. The structure-properties correlation raises complex questions due to the collective structure of these systems, often granular and porous, a crucial factor impacting their effectiveness and performance. In this framework, we investigate the optical and morphological properties of Ag nanoparticles (NPs) films and of Ag NPs/TiO(2) porous matrix films, one-step grown by supersonic cluster beam deposition. Morphology and structure of the Ag NPs film and of the Ag/TiO(2) (Ag/Ti 50-50) nanocomposite are related to the optical properties of the film employing spectroscopic ellipsometry (SE). We employ a simple Bruggeman effective medium approximation model, corrected by finite size effects of the nano-objects in the film structure to gather information on the structure and morphology of the nanocomposites, in particular porosity and average NPs size for the Ag/TiO(2) NP film. Our results suggest that SE is a simple, quick and effective method to measure porosity of nanoscale films and systems, where standard methods for measuring pore sizes might not be applicable. MDPI 2017-12-13 /pmc/articles/PMC5746932/ /pubmed/29236058 http://dx.doi.org/10.3390/nano7120442 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Cavaliere, Emanuele Benetti, Giulio Van Bael, Margriet Winckelmans, Naomi Bals, Sara Gavioli, Luca Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title | Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title_full | Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title_fullStr | Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title_full_unstemmed | Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title_short | Exploring the Optical and Morphological Properties of Ag and Ag/TiO(2) Nanocomposites Grown by Supersonic Cluster Beam Deposition |
title_sort | exploring the optical and morphological properties of ag and ag/tio(2) nanocomposites grown by supersonic cluster beam deposition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5746932/ https://www.ncbi.nlm.nih.gov/pubmed/29236058 http://dx.doi.org/10.3390/nano7120442 |
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