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Thin films composed...
Thin films composed of Ag nanoclusters dispersed in TiO2 : Influence of composition and thermal annealing on the microstructure and physical responses
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- Borges, J. (författare)
- Czech Tech Univ, Fac Elect Engn, Dept Control Engn, Tech 2, CR-16635 Prague 6, Czech Republic.
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- Rodrigues, M. S. (författare)
- Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.;Inst Pedro Nunes, Lab Ensaios Desgaste & Mat, P-3030199 Coimbra, Portugal.
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- Lopes, C. (författare)
- Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.
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- Costa, D. (författare)
- Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.
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- Couto, F. M. (författare)
- Norte Fluminense State Univ, Phys Sci Lab, BR-28013602 Campos, RJ, Brazil.
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- Kubart, Tomas (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Martins, B. (författare)
- Inst Pedro Nunes, Lab Ensaios Desgaste & Mat, P-3030199 Coimbra, Portugal.
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- Duarte, N. (författare)
- Inst Pedro Nunes, Lab Ensaios Desgaste & Mat, P-3030199 Coimbra, Portugal.
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- Dias, J. P. (författare)
- Inst Pedro Nunes, Lab Ensaios Desgaste & Mat, P-3030199 Coimbra, Portugal.
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- Cavaleiro, A. (författare)
- Univ Coimbra, Dept Mech Engn, SEG CEMUC, P-3030788 Coimbra, Portugal.
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- Polcar, T. (författare)
- Czech Tech Univ, Fac Elect Engn, Dept Control Engn, Tech 2, CR-16635 Prague 6, Czech Republic.;Univ Southampton, Natl Ctr Adv Tribol Southampton, Southampton SO17 1BJ, Hants, England.
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- Macedo, F. (författare)
- Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.
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- Vaz, F. (författare)
- Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.
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Czech Tech Univ, Fac Elect Engn, Dept Control Engn, Tech 2, CR-16635 Prague 6, Czech Republic Univ Minho, Ctr Fis, P-4710057 Braga, Portugal.;Inst Pedro Nunes, Lab Ensaios Desgaste & Mat, P-3030199 Coimbra, Portugal. (creator_code:org_t)
- Elsevier BV, 2015
- 2015
- Engelska.
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Ingår i: Applied Surface Science. - : Elsevier BV. - 0169-4332 .- 1873-5584. ; 358, s. 595-604
- Relaterad länk:
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https://eprints.soto...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Noble metal powders containing gold and silver have been used for many centuries, providing different colours in the windows of the medieval cathedrals and in ancient Roman glasses. Nowadays, the interest in nanocomposite materials containing noble nanoparticles embedded in dielectric matrices is related with their potential use for a wide range of advanced technological applications. They have been proposed for environmental and biological sensing, tailoring colour of functional coatings, or for surface enhanced Raman spectroscopy. Most of these applications rely on the so-called localised surface plasmon resonance absorption, which is governed by the type of the noble metal nanoparticles, their distribution, size and shape and as well as of the dielectric characteristics of the host matrix. The aim of this work is to study the influence of the composition and thermal annealing on the morphological and structural changes of thin films composed of Ag metal clusters embedded in a dielectric TiO2 matrix. Since changes in size, shape and distribution of the clusters are fundamental parameters for tailoring the properties of plasmonic materials, a set of films with different Ag concentrations was prepared. The optical properties and the thermal behaviour of the films were correlated with the structural and morphological changes promoted by annealing. The films were deposited by DC magnetron sputtering and in order to promote the clustering of the Ag nanoparticles the as-deposited samples were subjected to an in-air annealing protocol. It was demonstrated that the clustering of metallic Ag affects the optical response spectrum and the thermal behaviour of the films.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Thin films
- Ag clusters dispersed in TiO2
- Localised surface plasmon resonance
- Thermal behavioura
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- art (ämneskategori)
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Borges, J.
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Rodrigues, M. S.
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Lopes, C.
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Costa, D.
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Couto, F. M.
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Kubart, Tomas
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visa fler...
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Martins, B.
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Duarte, N.
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Dias, J. P.
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Cavaleiro, A.
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Polcar, T.
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Macedo, F.
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Vaz, F.
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