Nanoscale electromagnetic elements : computational aspects

Thomas, Brenton

Nanoscale electromagnetic elements : computational aspects

Thomas, Brenton

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Publication Type:: Thesis
Issue Date:: 2007

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Field	Value	Language
dc.contributor.author	Thomas, Brenton
dc.date.accessioned	2016-11-28T02:41:38Z
dc.date.available	2016-11-28T02:41:38Z
dc.date.issued	2007
dc.identifier.uri	http://hdl.handle.net/10453/64407
dc.description	University of Technology, Sydney. Faculty of Science.	en_AU
dc.description.abstract	The use of the Finite Difference Time Domain (FDTD) and the Transmission Line Matrix (TLM) algorithm to model nanoscale electromagnetic elements is investigated. It is found that comparable accuracy of the TLM algorithm to the FDTD algorithm combined with significant practical reductions in computation time render TLM a superior algorithm for nanoscale optoelectronic problems. It is also found that as the as the TLM algorithm implicitly incorporates "split fields" into its definition that it lends itself to a natural and simple implementation of the Berenger Perfectly Matched Layer from FDTD that appears not to have been reported in the literature. In the course of the research an extension to the Drude Lorentz complex permittivity model of gold is developed that provides coverage across the entire optical spectrum. This extended model is then used to validate the TLM algorithm against known the known optical response of a variety of objects including gold films, nano spheres and nano rods. The effect of coupling between elements of an array of nano scale objects is investigated with a consistent blue shift in the extinction spectra for arrays of closely spaced nanoscale objects observed.	en_AU
dc.format	Thesis (MSc)
dc.language.iso	en_AU	en_AU
dc.relation	https://opus.lib.uts.edu.au/bitstream/10453/64407/7/02Whole.pdf
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	au.edu.uts.lib/ppc
dc.rights	The author owns the copyright in this thesis including all reproduction and reuse rights for the work. The work may not be altered without the permission of the copyright owner. Attribution is essential when quoting or paraphrasing from this thesis.
dc.subject	Finite Difference Time Domain (FDTD)	en
dc.subject	Transmission Line Matrix (TLM) algorithm	en
dc.subject	"Split fields".	en
dc.subject	Berenger Perfectly Matched Layer	en
dc.title	Nanoscale electromagnetic elements : computational aspects	en_AU
dc.type	Thesis	en_AU
utslib.copyright.status	open_access

Abstract:

The use of the Finite Difference Time Domain (FDTD) and the Transmission Line Matrix (TLM) algorithm to model nanoscale electromagnetic elements is investigated. It is found that comparable accuracy of the TLM algorithm to the FDTD algorithm combined with significant practical reductions in computation time render TLM a superior algorithm for nanoscale optoelectronic problems. It is also found that as the as the TLM algorithm implicitly incorporates "split fields" into its definition that it lends itself to a natural and simple implementation of the Berenger Perfectly Matched Layer from FDTD that appears not to have been reported in the literature. In the course of the research an extension to the Drude Lorentz complex permittivity model of gold is developed that provides coverage across the entire optical spectrum. This extended model is then used to validate the TLM algorithm against known the known optical response of a variety of objects including gold films, nano spheres and nano rods. The effect of coupling between elements of an array of nano scale objects is investigated with a consistent blue shift in the extinction spectra for arrays of closely spaced nanoscale objects observed.

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http://hdl.handle.net/10453/64407