Optical response of nanostructured metal/dielectric composites and multilayers

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dc.contributor.author Smith, GB
dc.contributor.author Maaroof, AI
dc.contributor.author Allan, RS
dc.contributor.author Schelm, S
dc.contributor.author Anstis, GR
dc.contributor.author Cortie, MB
dc.date.accessioned 2009-11-09T02:44:14Z
dc.date.issued 2004
dc.date.issued 2004
dc.identifier.citation Proceedings of SPIE - The International Society for Optical Engineering, 2004, 5508 pp. 192 - 205
dc.identifier.citation Proceedings of SPIE - The International Society for Optical Engineering, 2004, 5508 pp. 192 - 205
dc.identifier.issn 0277-786X
dc.identifier.other E1 en_US
dc.identifier.uri http://hdl.handle.net/10453/1707
dc.description.abstract The homogeneous optical response in conducting nanostructured layers, and in insulating layers containing dense arrays of self assembled conducting nanoparticles separated by organic linkers, is examined experimentally through their effective complex indices (n*, k*). Classical effective medium models, modified to account for the 3-phase nanostructure, are shown to explain (n*, k*) in dense particulate systems but not inhomogeneous layers with macroscopic conductance for which a different approach to homogenisation is discussed, (n*, k*) data on thin granular metal films, thin mesoporous gold, and on thin metal layers containing ordered arrays of voids, is linked to properties of the surface plasmon states which span the nanostructured film. Coupling between evanescent waves at either surface counterbalanced by electron scattering losses must be considered. Virtual bound states for resonant photons result, with the associated transit delay leading to a large rise in n* in many nanostructures. Overcoating n-Ag with alumina is shown to alter (n*, k*) through its impact on the SP coupling. In contrast to classical optical homogenisation, effective indices depend on film thickness. Supporting high resolution SEM images are presented.
dc.description.abstract The homogeneous optical response in conducting nanostructured layers, and in insulating layers containing dense arrays of self assembled conducting nanoparticles separated by organic linkers, is examined experimentally through their effective complex indices (n*, k*). Classical effective medium models, modified to account for the 3-phase nanostructure, are shown to explain (n*, k*) in dense particulate systems but not inhomogeneous layers with macroscopic conductance for which a different approach to homogenisation is discussed, (n*, k*) data on thin granular metal films, thin mesoporous gold, and on thin metal layers containing ordered arrays of voids, is linked to properties of the surface plasmon states which span the nanostructured film. Coupling between evanescent waves at either surface counterbalanced by electron scattering losses must be considered. Virtual bound states for resonant photons result, with the associated transit delay leading to a large rise in n* in many nanostructures. Overcoating n-Ag with alumina is shown to alter (n*, k*) through its impact on the SP coupling. In contrast to classical optical homogenisation, effective indices depend on film thickness. Supporting high resolution SEM images are presented.
dc.relation.isbasedon 10.1117/12.555971
dc.title Optical response of nanostructured metal/dielectric composites and multilayers
dc.type Conference Proceeding
dc.description.version Published
dc.parent Proceedings of SPIE - The International Society for Optical Engineering
dc.parent Proceedings of SPIE - The International Society for Optical Engineering
dc.journal.volume 5508
dc.journal.number en_US
dc.publocation USA en_US
dc.identifier.startpage 192 en_US
dc.identifier.endpage 205 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.conference Conference on Complex Mediums V - Light and Complexity
dc.conference.location Colorado, USA en_US
dc.for 0204 Condensed Matter Physics
dc.for 0912 Materials Engineering
dc.for 1007 Nanotechnology
dc.personcode 730312
dc.personcode 840027
dc.personcode 020302
dc.personcode 010727
dc.percentage 40 en_US
dc.classification.name Nanotechnology en_US
dc.classification.type FOR-08 en_US
dc.custom Complex Mediums V: Light & Complexity en_US
dc.date.activity 20040804 en_US
dc.date.activity 2004-08-04
dc.location.activity Colorado, USA en_US
dc.location.activity Denver, CO
dc.description.keywords Effective medium
dc.description.keywords Effective medium
dc.description.keywords Nanostructured metal films
dc.description.keywords Nanostructured metal films
dc.description.keywords Porous metal
dc.description.keywords Porous metal
dc.description.keywords Surface plasmons
dc.description.keywords Surface plasmons
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 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history General (ID: 2)
utslib.collection.history School of Physics and Advanced Materials (ID: 343)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:12:01+10:00]
utslib.collection.history School of Physics and Advanced Materials (ID: 343)
utslib.collection.history School of Physics and Advanced Materials (ID: 343)


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