Homogenized Lorentz-Drude optical response in highly nanoporous conducting gold layers produced by de-alloying

UTSePress Research/Manakin Repository

Search UTSePress Research


Advanced Search

Browse

My Account

Show simple item record

dc.contributor.author Maaroof, Abbas en_US
dc.contributor.author Gentle, Angus en_US
dc.contributor.author Smith, Geoff en_US
dc.date.accessioned 2009-06-26T04:10:33Z
dc.date.available 2009-06-26T04:10:33Z
dc.date.issued 2007 en_US
dc.identifier 2006011466 en_US
dc.identifier.citation Smith Geoffrey, Maaroof Abbas, and Gentle Angus 2007, 'Homogenized Lorentz-Drude optical response in highly nanoporous conducting gold layers produced by de-alloying', Elsevier Science Bv, vol. 271, no. 1, pp. 263-268. en_US
dc.identifier.issn 0030-4018 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/465
dc.description.abstract Nanoporousgold films produced by de-alloying AuAl2 with void densities between 45% and 65% retain high infra-red reflectance and good conductivity. They act optically like a homogenous Lorentz-Drude metal with a unique wp and an inter-band transition energy unchanged from that of dense gold. The link between wp and wp in dense gold is found using a cimplification of the Bergmann expansio for permittivity valid at infra-red wavelengths. The carrier relaxation time of the effective metal becomes the actual relaxation time in the Au netowork and the complex refractive indices (n.k) found using normal incidence spectrophotometry and oblique incidence ellipsometry agree closely with each other. The single pole approximation for the ratio wp/wp in the infra-red allows estimates of void content and the apparent shift in carrier effective mass. It is then possible to model with no adjustable parameters, the full UV-visible-NR spectral response, giving excellent agreemtn with data. A range of films with these properties are presented. en_US
dc.publisher Elsevier Science Bv en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.optcom.2006.10.038 en_US
dc.title Homogenized Lorentz-Drude optical response in highly nanoporous conducting gold layers produced by de-alloying en_US
dc.parent Optics Communications en_US
dc.journal.volume 271 en_US
dc.journal.number 1 en_US
dc.publocation Amsterdam, Netherlands en_US
dc.identifier.startpage 263 en_US
dc.identifier.endpage 268 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 020500 en_US
dc.personcode 730312 en_US
dc.personcode 010727 en_US
dc.personcode 000307 en_US
dc.percentage 100 en_US
dc.classification.name Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.description.keywords N/A en_US
dc.staffid 000307 en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record