Effective optical constants of nanostructured thin silver films and impact of an insulator coating

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dc.contributor.author Maaroof, AI
dc.contributor.author Smith, GB
dc.date.accessioned 2009-06-26T04:10:30Z
dc.date.issued 2005-08-01
dc.identifier.citation Thin Solid Films, 2005, 485 (1-2), pp. 198 - 206
dc.identifier.citation Thin Solid Films, 2005, 485 (1-2), pp. 198 - 206
dc.identifier.issn 0040-6090
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/412
dc.description.abstract Two distinct electrically percolated types of nanostructured silver (n-Ag) films on glass substrates have been optically and structurally studied and effective refractive indices determined. The first though well above the percolation threshold contains networks of elongated nano-voids over ∼15% of the film area. The second is at a thickness where the film is almost void free. A surprising qualitative shift in spectral response to Drude like behaviour in the n-Ag film with many voids has been found after overcoating with oxide dielectric (Al2O3). With no overcoat much incident light is being shunted through the voids and does not see the metal while with the overcoat the reverse occurs and light passes mainly through the metal. A recent effective medium model for a pair and chain of cylindrical voids is used to explore if quasistatic models can describe these resonant features. It is concluded that induced surface current related dynamic effects are present and impact strongly on effective indices in n-Ag containing nano-voids. © 2005 Elsevier B.V. All rights reserved.
dc.description.abstract Two distinct electrically percolated types of nanostructured silver (n-Ag) films on glass substrates have been optically and structurally studied and effective refractive indices determined. The first though well above the percolation threshold contains networks of elongated nano-voids over ∼15% of the film area. The second is at a thickness where the film is almost void free. A surprising qualitative shift in spectral response to Drude like behaviour in the n-Ag film with many voids has been found after overcoating with oxide dielectric (Al2O3). With no overcoat much incident light is being shunted through the voids and does not see the metal while with the overcoat the reverse occurs and light passes mainly through the metal. A recent effective medium model for a pair and chain of cylindrical voids is used to explore if quasistatic models can describe these resonant features. It is concluded that induced surface current related dynamic effects are present and impact strongly on effective indices in n-Ag containing nano-voids. © 2005 Elsevier B.V. All rights reserved.
dc.language eng
dc.language eng
dc.relation.isbasedon 10.1016/j.tsf.2005.03.035
dc.title Effective optical constants of nanostructured thin silver films and impact of an insulator coating
dc.type Journal Article
dc.description.version Published
dc.parent Thin Solid Films
dc.parent Thin Solid Films
dc.journal.volume 1-2
dc.journal.volume 485
dc.journal.number 1-2 en_US
dc.publocation Lausanne, Switzerland en_US
dc.identifier.startpage 198 en_US
dc.identifier.endpage 206 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0204 Condensed Matter Physics
dc.personcode 730312
dc.personcode 010727
dc.percentage 100 en_US
dc.classification.name Condensed Matter Physics en_US
dc.classification.type FOR-08 en_US
dc.custom 1.647 en_US
dc.description.keywords Nanostructured films
dc.description.keywords Nanostructured films
dc.description.keywords Optical constants
dc.description.keywords Optical constants
dc.description.keywords Optical properties
dc.description.keywords Optical properties
dc.description.keywords Silver
dc.description.keywords Silver
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)
utslib.collection.history School of Physics and Advanced Materials (ID: 343)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:11:04+10:00]


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