Metal-Insulator nanocomposites which act optically like homogeneous conductors

Gentle, A; Maaroof, A; Smith, G

Metal-Insulator nanocomposites which act optically like homogeneous conductors

Gentle, A Maaroof, A Smith, G

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Publisher:: SPIE - International Society for Optical Engineering
Publication Type:: Journal Article
Citation:: Smith Geoffrey, Gentle Angus, and Maaroof Abbas 2007, 'Metal-Insulator nanocomposites which act optically like homogeneous conductors', SPIE - International Society for Optical Engineering, vol. 1, pp. 013507-1-013507-15.
Issue Date:: 2007

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Field	Value	Language
dc.contributor.author	Gentle, A	en_US
dc.contributor.author	Maaroof, A	en_US
dc.contributor.author	Smith, G	en_US
dc.date.accessioned	2009-12-21T02:33:00Z
dc.date.available	2009-12-21T02:33:00Z
dc.date.issued	2007	en_US
dc.identifier	2007001232	en_US
dc.identifier.citation	Smith Geoffrey, Gentle Angus, and Maaroof Abbas 2007, 'Metal-Insulator nanocomposites which act optically like homogeneous conductors', SPIE - International Society for Optical Engineering, vol. 1, pp. 013507-1-013507-15.	en_US
dc.identifier.issn	1934-2608	en_US
dc.identifier.other	C1	en_US
dc.identifier.uri	http://hdl.handle.net/10453/4360
dc.description.abstract	Conductor-insulator nanocomposites in which the conductor percolates can have optical responses at longer wavelengths like dense conductors with an effective plasma frequency wp. This applies at wavelengths where the Bergman spectral function F for permittivity varies sufficiently slowly with wavelength. wp can be engineered by varying the components, the nanostructure's topology, or the dielectric volume fraction f. The homogenized conductor acts like a dense conductor whose charge carriers have effective mass meff. Results are presented for wp(f) and meff(f) using the Maxwell Garnett (MG) and Bruggemann (BR) models for spheres and aligned ellipsoids. In the BR case meff(f) at the percolation concentration is singular. Example wp* data for spheres and ellipsoids are given which match predictions. Anisotropy in effective mass is considered, such that effective plasma frequency can depend strongly on polarisation direction of incident light.	en_US
dc.publisher	SPIE - International Society for Optical Engineering	en_US
dc.relation.ispartof	Journal of Nanophotonics	en_US
dc.relation.ispartof	Verified OK	en_US
dc.relation.isbasedon	http://dx.doi.org/10.1117/1.2711706	en_US
dc.rights	Copyright 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.	en_US
dc.subject.classification	Optical Physics	en_US
dc.title	Metal-Insulator nanocomposites which act optically like homogeneous conductors	en_US
dc.type	Journal article
utslib.citation.volume	1	en_US
utslib.location	United States	en_US
utslib.citation.startpage	013507-1	en_US
utslib.citation.endpage	013507-15	en_US
utslib.identifier.org	SCI.Physics and Advanced Materials	en_US
utslib.for	020500	en_US
utslib.percentage	60	en_US
utslib.copyright.status	closed_access

Abstract:

Conductor-insulator nanocomposites in which the conductor percolates can have optical responses at longer wavelengths like dense conductors with an effective plasma frequency wp*. This applies at wavelengths where the Bergman spectral function F for permittivity varies sufficiently slowly with wavelength. wp* can be engineered by varying the components, the nanostructure's topology, or the dielectric volume fraction f. The homogenized conductor acts like a dense conductor whose charge carriers have effective mass meff*. Results are presented for wp*(f) and meff*(f) using the Maxwell Garnett (MG) and Bruggemann (BR) models for spheres and aligned ellipsoids. In the BR case meff*(f) at the percolation concentration is singular. Example wp* data for spheres and ellipsoids are given which match predictions. Anisotropy in effective mass is considered, such that effective plasma frequency can depend strongly on polarisation direction of incident light.

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http://hdl.handle.net/10453/4360