Optical properties of mesoporous gold films

Maaroof, AI; Cortie, MB; Smith, GB

Optical properties of mesoporous gold films

Maaroof, AI Cortie, MB

Smith, GB

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Publication Type:: Journal Article
Citation:: Journal of Optics A: Pure and Applied Optics, 2005, 7 (7), pp. 303 - 309
Issue Date:: 2005-07-01

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Field	Value	Language
dc.contributor.author	Maaroof, AI	en_US
dc.contributor.author	Cortie, MB https://orcid.org/0000-0003-3202-6398	en_US
dc.contributor.author	Smith, GB https://orcid.org/0000-0002-6985-2880	en_US
dc.date.issued	2005-07-01	en_US
dc.identifier.citation	Journal of Optics A: Pure and Applied Optics, 2005, 7 (7), pp. 303 - 309	en_US
dc.identifier.issn	1464-4258	en_US
dc.identifier.uri	http://hdl.handle.net/10453/361
dc.description.abstract	Mesoporous gold thin films on glass substrates were fabricated by sputtering of AuAl2 precursor films followed by a de-alloying etch. The resulting sponge-like Au films have very high internal surface area due to nanoscale pores and channels. Scattering is not significant and the optical properties for such nanostructured films were examined using ellipsometry and spectrophotometry. The complex refractive indices of the optically equivalent uniform smooth layer satisfy Kramers-Kronig (KK) self-consistency but have unusual dispersion relations and magnitudes for a film containing the amount of noble metal present. The reflectance at infrared wavelengths is neither metal-nor insulator-like, and the indices have unique dispersion curves. © 2005 IOP Publishing Ltd.	en_US
dc.relation.ispartof	Journal of Optics A: Pure and Applied Optics	en_US
dc.relation.isbasedon	10.1088/1464-4258/7/7/007	en_US
dc.subject.classification	Optics	en_US
dc.title	Optical properties of mesoporous gold films	en_US
dc.type	Journal Article
utslib.citation.volume	7	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	0206 Quantum Physics	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
dc.location.activity	Sydney
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	7	en_US
pubs.publication-status	Published	en_US
pubs.volume	7	en_US

Abstract:

Mesoporous gold thin films on glass substrates were fabricated by sputtering of AuAl2 precursor films followed by a de-alloying etch. The resulting sponge-like Au films have very high internal surface area due to nanoscale pores and channels. Scattering is not significant and the optical properties for such nanostructured films were examined using ellipsometry and spectrophotometry. The complex refractive indices of the optically equivalent uniform smooth layer satisfy Kramers-Kronig (KK) self-consistency but have unusual dispersion relations and magnitudes for a film containing the amount of noble metal present. The reflectance at infrared wavelengths is neither metal-nor insulator-like, and the indices have unique dispersion curves. © 2005 IOP Publishing Ltd.

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http://hdl.handle.net/10453/361