Nanoporous plasmonic coatings

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dc.contributor.author Maaroof, Abbas en_US
dc.contributor.author Gentle, Angus en_US
dc.contributor.author Cortie, Michael en_US
dc.contributor.author Smith, Geoff en_US
dc.contributor.editor Smith, GB; Cortie, MB en_US
dc.date.accessioned 2010-06-16T04:59:30Z
dc.date.available 2010-06-16T04:59:30Z
dc.date.issued 2007 en_US
dc.identifier 2006011814 en_US
dc.identifier.citation Maaroof Abbas et al. 2007, 'Nanoporous plasmonic coatings', The International Society for Optical Engineering, USA, pp. 6647OD-1-6647OD-10. en_US
dc.identifier.issn 0277-786X en_US
dc.identifier.other E1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/11875
dc.description.abstract The electrical and optical properties of mesoporous gold are compared to those of thin porous gold films and a simulated thin film made by randomly distributing voids in gold, until the voids fill 76% of film volume. All layers are electrically conducting but in some cases the critical percolation thresholds are close to zero, so conduction is possible at very high void content. Significant qualitative differences are apparent between the properties of mesoporous gold, and very thin sputtered gold containing voids, in plasmonic responses at optical frequencies and in dc resistance, both as a function of fill factor. The mesoporous films have an effective plasma frequency determined by void fill factor and structure, but do not support surface plasmons. In contrast thin porous gold layers display optical features associated with localized and de-localized surface plasmons. Sputtered porous gold is 2-dimensional and its percolation threshold requires a "Swiss-cheese" rather than particle cluster model. Thicker mesoporous layers have critical parameters consistent with very high connectivity, or equivalently large hyper-dimensionality. Our meso-gold samples display various hyper-dimensionalities from 3 to above 10. en_US
dc.language en_US
dc.publisher The International Society for Optical Engineering en_US
dc.relation.isbasedon http://dx.doi.org/10.1117/12.733195 en_US
dc.rights © (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
dc.title Nanoporous plasmonic coatings en_US
dc.parent Nanocoatings: Proceeding for SPIE vol 6647 en_US
dc.journal.volume 6647 en_US
dc.journal.number en_US
dc.publocation USA en_US
dc.identifier.startpage 6647OD-1 en_US
dc.identifier.endpage 6647OD-10 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.for 100700 en_US
dc.personcode 010727 en_US
dc.personcode 000307 en_US
dc.personcode 020302 en_US
dc.personcode 730312 en_US
dc.percentage 100 en_US
dc.classification.name Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom Inaugural SPIE proceedings on Nanocoatings en_US
dc.date.activity 20070826 en_US
dc.location.activity San Diego, California, USA en_US
dc.description.keywords nanoporous metal, thin film, effective medium, plasma frequency, hyper-dimensions, percolation en_US
dc.staffid en_US
dc.staffid 730312 en_US


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