Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts

Download

index.pdf

Date

2008-12-01

Author

Ergül, Özgür Salih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

176
views

0
downloads

We present a novel stabilization procedure for accurate surface formulations of electromagnetic scattering problems involving three-dimensional dielectric objects with arbitrarily low contrasts. Conventional surface integral equations provide inaccurate results for the scattered fields when the contrast of the object is low, i.e., when the electromagnetic material parameters of the scatterer and the host medium are close to each other. We propose a stabilization procedure involving the extraction of nonradiating currents and rearrangement of the right-hand side of the equations using fictitious incident fields. Then, only the radiating currents are solved to calculate the scattered fields accurately. This technique can easily be applied to the existing implementations of conventional formulations, it requires negligible extra computational cost, and it is also appropriate for the solution of large problems with the multilevel fast multipole algorithm. We show that the stabilization leads to robust formulations that are valid even for the solutions of extremely low-contrast objects.

Subject Keywords

Physics and Astronomy (miscellaneous), Computer Science Applications

URI

https://hdl.handle.net/11511/47795

Journal

JOURNAL OF COMPUTATIONAL PHYSICS

DOI

https://doi.org/10.1016/j.jcp.2008.08.004

Collections

Department of Electrical and Electronics Engineering, Article

Suggestions

OpenMETU
Core

Measurement of the inclusive 3-jet production differential cross section in proton-proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range Khachatryan, V.; et. al. (Springer Science and Business Media LLC, 2015-05-01) This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton-proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5 fb(-1) collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445-3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A compari...
Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at root s=7TeV Chatrchyan, S.; et. al. (Springer Science and Business Media LLC, 2014-11-01) A measurement of differential cross sections for the production of a pair of isolated photons in proton-proton collisions at root s = 7 TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb(-1) collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range vertical bar eta vertical bar ...
Integrated piezoresistive sensors for atomic force-guided scanning Hall probe microscopy BROOK, ALEX J; BENDİNG, SJ; PINTO, JONATHAN; Oral, Ahmet; RİTCHİE, DAVİD; BEERE, H; HENİNİ, M; SPRİNGTHORPE, A (AIP Publishing, 2003-05-19) We report the development of an advanced sensor for atomic force-guided scanning Hall probe microscopy whereby both a high mobility heterostructure Hall effect magnetic sensor and an n-Al0.4Ga0.6As piezoresistive displacement sensor have been integrated in a single III-V semiconductor cantilever. This allows simple operation in high-vacuum/variable-temperature environments and enables very high magnetic and topographic resolution to be achieved simultaneously. Scans of magnetic induction and topography of a...
Direct observation of the strength of plasmon-longitudinal optical phonon interaction in n-type GaAs Altan, Hakan; Matten, D.; Alfano, R. R. (AIP Publishing, 2006-07-31) The screening of longitudinal optical phonons by plasmons is investigated by time-resolved visible pump-mid-infrared probe transmission measurements in a series of light to highly doped n-type GaAs wafers. The reduced relaxation of photogenerated carriers is strongly correlated to the coupling between longitudinal optical phonons and background plasmons as suggested by the variation of the phonon strength over the doping range. The critical plasmon density at which the optical phonons were effectively scree...
Conducting and transparent single-wall carbon nanotube electrodes for polymer-fullerene solar cells Pasquier, AD; Ünalan, Hüsnü Emrah; Kanwal, A; Miller, S; Chhowalla, M (AIP Publishing, 2005-11-14) We describe the use of single-wall carbon nanotube (SWNT) thin films as transparent and conducting electrodes for hole collection in poly(hexyl)thiophene-[6-6]phenyl-C-61-butyric acid methyl ester (P3HT-PCBM) organic photovoltaics. We report a power conversion efficiency of 1%, with a fill factor of 0.3 and a short-circuit current of 6.5 mA/cm(2) under 100 mW/cm(2) polychromatic white light illumination measured in air. These values are comparatively higher than reference cells of similar thickness made on ...

Citation Formats

Ö. S. Ergül, “Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts,” JOURNAL OF COMPUTATIONAL PHYSICS, pp. 9898–9912, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47795.