Optical and structural characterization of silver islands films on glass substrates

Lončarić, Martin; Sancho‐Parramon, Jordi; Pavlović, Mladen; Zorc, Hrvoje; Dubček, Pavo; Turković, Aleksandra; Bernstorff, Sigrid; Jakopič, Georg; Haase, A.

doi:10.1016/j.vacuum.2009.04.014

Cited by 36 publications

(29 citation statements)

References 20 publications

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“…Silver grows through a Volmer Weber mode that leads to the formation of separate clusters until the thickness of the film reaches several nanometres 24 . This feature of the growth is confirmed by the micrographs which show well separated np on the patterned template.…”

Section: Resultsmentioning

confidence: 99%

Thermal dynamics of silver clusters grown on rippled silica surfaces

Bhatnagar

Ranjan

Jolley

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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Silver nanoparticles have been deposited on silicon rippled patterned templates at an angle of incidence of 70 • to the surface normal. The templates are produced by oblique incidence argon ion bombardment and as the fluence increases, the periods and heights of the structures increase. Structures with periods of 20 nm, 35 nm and 45 nm have been produced. Moderate temperature vacuum annealing shows the phenomenon of cluster coalescence following the contour of the more exposed faces of the ripple for the case of 35 nm and 45 nm but not at 20 nm where the silver aggregates into larger randomly distributed clusters. In order to understand this effect, the morphological changes of silver nanoparticles deposited on an asymmetric rippled silica surface are investigated through the use of Molecular Dynamics simulations for different deposition angles of incidence between 0 • and 70 • and annealing temperatures between 500K and 900K. Near to normal incidence, clusters are observed to migrate over the entire surface but for deposition at 70 • , a similar patterning is observed as in the experiment. The random distribution of clusters for the periodicity ≈ of 20 nm is linked to the geometry of the silica surface which has a lower ripple height than the longer wavelength structures. Calculations carried out on a surface with such a lower ripple height also demonstrate a similar effect.

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Section: Resultsmentioning

confidence: 99%

Thermal dynamics of silver clusters grown on rippled silica surfaces

Bhatnagar

Ranjan

Jolley

et al. 2017

Nuclear Instruments and Methods in Physics Research Section B:

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“…For the annealed samples the intensity of the scattered light is more concentrated at smaller angles, suggesting that the particle size increases upon annealing. An estimation of the particle size can be done in terms of the so-called Guinier approximation, that gives the particle radius in the direction perpendicular (R V ) and parallel (R H ) to the sample surface from analysis of 1D intensity distributions in the two characteristic directions parallel and perpendicular to sample surface (Table 1) 10 . In addition, the average interparticle distance (D) can be estimated from the position of the maximum of scattered light 10 .…”

Section: Resultsmentioning

confidence: 99%

“…An estimation of the particle size can be done in terms of the so-called Guinier approximation, that gives the particle radius in the direction perpendicular (R V ) and parallel (R H ) to the sample surface from analysis of 1D intensity distributions in the two characteristic directions parallel and perpendicular to sample surface (Table 1) 10 . In addition, the average interparticle distance (D) can be estimated from the position of the maximum of scattered light 10 . As observed previously in metal island films 11 , samples deposited at room temperature show a more elliptical shape and smaller size than those deposited at hot substrates.…”

Section: Resultsmentioning

confidence: 99%

“…In this case, the SPR peak appears to be more correlated with the degree of sphericity of the islands than with the Au content. Indeed, island films deposited at cold substrates have a small aspect ratio (R V /R H ) that strongly affects the SPR 10 . Upon thermal annealing, SPR red-shift with higher Au content is observed for films deposited at both, room temperature and hot substrates.…”

Section: Resultsmentioning

confidence: 99%

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Optical and structural properties of Au-Ag islands films for plasmonic applications

et al. 2011

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Abstract-Bimetallic islands films consisting of composite Au-Ag nanoparticles are deposited on glass substrates by electron beam evaporation. Broad tuning of the surface plasmon resonance (SPR) characteristics can be achieved by controlling film composition, deposition temperature and post-deposition thermal annealing. Optical and structural characterization of the samples enable to establish the link between the SPR and the morphological and compositional characteristics of nanoparticles.

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“…Ag film deposited in this conditions remains in the shape of metal clusters with no significant percolation among the clusters. The SiO 2 layers of the given thickness cover the metal nanoclusters completely, so the resulting coating has a real multilayer structure 11,12 .…”

Section: Methodsmentioning

confidence: 99%

Multilayer based interferential-plasmonic structure: metal cluster 3D grating combined with dielectric mirror

2010

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Abstract-A three dimensional (3D) photonic microstructure consisting of metal clusters embedded in dielectric matrix is coated with a dielectric mirror. The produced photonic structure shows optical behaviour that combines the interferential effects of the multilayer stack and the surface plasmon resonance of metal clusters. Due to its feasibility and the possibility to widely modify the optical properties of the resulting interferential-plasmonic structure, this approach represents a promising method for the production of novel optical components.

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Optical and structural characterization of silver islands films on glass substrates

Cited by 36 publications

References 20 publications

Thermal dynamics of silver clusters grown on rippled silica surfaces

Thermal dynamics of silver clusters grown on rippled silica surfaces

Optical and structural properties of Au-Ag islands films for plasmonic applications

Multilayer based interferential-plasmonic structure: metal cluster 3D grating combined with dielectric mirror

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