Skip navigation
Skip navigation

Finite-Difference and Pseudospectral Time-Domain Methods Applied to Backward-Wave Metamaterials

Feise, Michael; Schneider, John B; Bevelacqua, Peter J

Description

Backward-wave (BW) materials that have simultaneously negative real parts of their electric permittivity and magnetic permeability can support waves where phase and power propagation occur in opposite directions. These materials were predicted to have many unusual electromagnetic properties, among them amplification of the near-field of a point source, which could lead to the perfect reconstruction of the source field in an image [J. Pendry, Phys. Rev. Lett. vol. 85, pg. 3966, 2000]. Often...[Show more]

dc.contributor.authorFeise, Michael
dc.contributor.authorSchneider, John B
dc.contributor.authorBevelacqua, Peter J
dc.date.accessioned2015-12-10T22:24:56Z
dc.identifier.issn0018-926X
dc.identifier.urihttp://hdl.handle.net/1885/53274
dc.description.abstractBackward-wave (BW) materials that have simultaneously negative real parts of their electric permittivity and magnetic permeability can support waves where phase and power propagation occur in opposite directions. These materials were predicted to have many unusual electromagnetic properties, among them amplification of the near-field of a point source, which could lead to the perfect reconstruction of the source field in an image [J. Pendry, Phys. Rev. Lett. vol. 85, pg. 3966, 2000]. Often systems containing BW materials are simulated using the finite-difference time-domain technique. We show that this technique suffers from a numerical artifact due to its staggered grid that makes its use in simulatious involving BW materials problematic. The pseudospectral time-domain technique, on the other hand, uses a collocated grid and is free of this artifact. It is also shown that when modeling the dispersive BW material, the linear frequency approximation method introduces error that affects the frequency of vanishing reflection, while the auxiliary differential equation, the Z-transform, and the bilinear frequency approximation method produce vanishing reflection at the correct frequency. The case of vanishing reflection is of particular interest for field reconstruction in imaging applications.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE Inc)
dc.sourceIEEE Transactions on Antennas and Propagation
dc.titleFinite-Difference and Pseudospectral Time-Domain Methods Applied to Backward-Wave Metamaterials
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume52
dc.date.issued2004
local.identifier.absfor020501 - Classical and Physical Optics
local.identifier.ariespublicationu9201385xPUB269
local.type.statusPublished Version
local.contributor.affiliationFeise, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSchneider, John B, Washington State University
local.contributor.affiliationBevelacqua, Peter J, Stanford University
local.description.embargo2037-12-31
local.bibliographicCitation.issue11
local.bibliographicCitation.startpage2955
local.bibliographicCitation.lastpage2962
local.identifier.doi10.1109/TAP.2004.835274
dc.date.updated2015-12-09T09:20:07Z
local.identifier.scopusID2-s2.0-9744265777
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Feise_Finite-Difference_and_2004.pdf311.74 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  22 January 2019/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator