Browsing by Keywords "Scattering"
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Analysis of an arbitraryprofile, cylindrical, impedance reflector surface illuminated by an Epolarized complex line source beam
(VSP BV, 2014)Electromagnetic scattering from a cylindrical reflector surface having an arbitrary conic section profile is studied. We assumed an electrically thin layer antenna illuminated by a complex line source in Epolarization ... 
Analysis of thin dielectric cylindrical reflector having an arbitrary conic section profile illuminated by complex line source: Hpolarization case
(IEEE Computer Society, 2014)Arbitrary conic section profile and thin dielectric reflector is analyzed by using the Method of Analytical Regularization (MAR) technique based on RiemannHilbert problem and Fourier inversion procedures. The reflector ... 
Collective oscillations in a twodimensional BoseEinstein condensate with a quantized vortex state
(The American Physical Society, 2005)We study the effect of lower dimensional geometry on the frequency splitting of the quadrupole oscillations of a harmonically trapped BoseEinstein condensate due to the presence of a quantized vortex. To study the effect ... 
Dielectric screening effects on electron transport in Ga0.51In0.49P/InxGa1xAs/GaAs quantum wells
(American Institute of Physics, 20000418)The effects of dielectric screening on the two dimensional polar optical phonon scattering and on electron transport in Ga0.51In0.49P/InxGa1xAs/GaAs (x=0, 0.15, and 0.25) modulation doped heterostructures and high electron ... 
Dimensional crossover in twodimensional BoseFermi mixtures
(Institute of Physics Publishing, 2010)We investigate the equilibrium properties of bosonfermion mixtures consisting of a Bose condensate and spinpolarized Fermi gas confined in a harmonic twodimensional (2D) trap using meanfield theory. Bosonboson and ... 
Effective mass enhancement in twodimensional electron systems: The role of interaction and disorder effects
(Elsevier, 2004)Recent experiments on twodimensional (2D) electron systems have found a sharp increase in the effective mass of electrons with decreasing electron density. In an effort to understand this behavior we employ the manybody ... 
Efficiency and harmonic enhancement trends in GaNbased Gunn diodes: Ensemble Monte Carlo analysis
(American Institute of Physics, 2004)Gallium nitride can offer a highpower alternative for millimeterwave Gunn oscillators. Hence, an ensemble Monte Carlobased comprehensive theoretical assessment of efficiency and harmonic enhancement in ntype GaN Gunn ... 
An efficient parallel implementation of the multilevel fast multipole algorithm for rigorous solutions of largescale scattering problems
(2010)We present the solution of largescale scattering problems discretized with hundreds of millions of unknowns. The multilevel fast multipole algorithm (MLFMA) is parallelized using the hierarchical partitioning strategy on ... 
Efficient solution of the combinedfield integral equation with the parallel multilevel fast multipole algorithm
(2007)We present fast and accurate solutions of largescale scattering problems formulated with the combinedfield integral equation. Using the multilevel fast multipole algorithm (MLFMA) parallelized on a cluster of computers, ... 
Electromagnetic scattering by several 2D single biological cell models
(Institute of Electrical and Electronics Engineers, 2018)The electromagnetic 2D scattering from a single biological cell is analyzed by using Muller boundary integral equation (MBIE) method. The accuracy and smoothness of the solution are improved by applying Nystromtype ... 
Electron transport properties in Al0.25Ga0.75N/AlN/GaN heterostructures with different InGaN back barrier layers and GaN channel thicknesses grown by MOCVD
(Wiley, 20120124)The electron transport properties in Al0.25Ga0.75N/AlN/GaN/InxGa1xN/GaN double heterostructures with various indium compositions and GaN channel thicknesses were investigated. Samples were grown on cplane sapphire ... 
Enhanced coupling to microsphere resonances with optical fibers
(Optical Society of America, 1997)Morphologydependent resonances (MDR's) of polystyrene microspheres were excited by an optical fiber coupler. For optical elimination of the aircladding interface at the optical fiber coupler surface, the microsphere was ... 
Fast algorithm for scattering from planar arrays of conducting patches
(Institute of Electrical and Electronics Engineers, 199804)A direct (noniterative) algorithm for the solution of the electromagnetic scattering from threedimensional planar arrays of conducting patches is developed. For an Nunknown problem, the computational complexity of this ... 
Fast and accurate solutions of scattering problems involving dielectric objects with moderate and low contrasts
(2007)We consider the solution of electromagnetic scattering problems involving relatively large dielectric objects with moderate and low contrasts. Threedimensional objects are discretized with RaoWiltonGlisson functions and ... 
Free expansion of twodimensional condensates with a vortex
(Institute of Physics Publishing, 2003)We study the free expansion of a pancakeshaped Bosecondensed gas, which is initially trapped under harmonic confinement and containing a vortex at its centre. In the case of a radial expansion holding the axial confinement ... 
The ground state and vortices in a twodimensional Bose gas confined in a harmonic trap
(Institute of Physics Publishing, 2002)We study the ground state properties of a twodimensional Bose gas in an harmonic trap potential using the recently proposed meanfield equation that takes into account the correct dimensionality effect. In contrast to the ... 
Lasing modes of infinite periodic chain of quantum wires
(2009)In this paper, we study the scattering and eigenvalue problems for a periodic open optical resonator that is an infinite chain of active circular cylindrical quantum wires standing in free space. The scattering problem is ... 
Lowthreshold Lasing eigenmodes of infinite periodic chain of quantum wires
(Optical Society of America, 20101026)We study the lasing eigenvalue problems for a periodic open optical resonator made of an infinite grating of circular dielectric cylinders standing in free space, in the E and Hpolarization modes. If possessing a ... 
Manipulation of backscattering from a dielectric cylinder of triangular crosssection using the interplay of golike ray effects and resonances
(Institute of Electrical and Electronics Engineers, 2015)A triangular dielectric cylinder (dielectric prism) of the size, in crosssection, comparable to or moderately larger than the wavelength is a scatterer, which blends together two different types of electromagnetic behavior: ... 
Modeling of subsonic cavity flows by neural networks
(2004)Influencing the behavior of a flow field is a core issue as its improvement can yield significant increase of the efficiency and performance of fluidic systems. On the other hand, the tools of classical control systems ...