Browsing by Keywords "Magnetism"
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DC shift based image reconstruction for magnetic particle imaging
(Institute of Electrical and Electronics Engineers Inc., 2017)Magnetic Particle Imaging (MPI) is a new imaging technology that images the spatial distribution of iron oxide nanoparticles. Since the magnetic field strength that can be safely applied in MPI is limited, the fieldofview ... 
The effect of gadolinium doping on the structural, magnetic and photoluminescence properties of electrospun bismuth ferrite nanofibers
(Elsevier Ltd, 2015)Gadolinium (Gd) doped Bismuth ferrite (BFO) nanofibers (Bi1xGdxFeO3 (x=0.0, 0.05, 0.10, 0.15 and 0.20)) were synthesized via electrospinning. Scanning Electron Microscope (SEM) analysis showed that the diameter of the ... 
Effect of magnetic field on the radial pulsations of a gas bubble in a nonNewtonian fluid
(Elsevier Ltd, 2015)Dynamics of acoustically driven bubbles' radial oscillations in viscoelastic fluids are known as complex and uncontrollable phenomenon indicative of highly active nonlinear as well as chaotic behavior. In the present paper, ... 
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, ... 
Fabrication and characterization of SmCo5/Nb ferromagnetic/superconducting hybrid thin films grown by RF magnetron sputtering technique
(Elsevier, 2017)Ferromagnet/Superconductor (F/S) bilayer hybrids show exclusive states due to the mutual interaction between the superconductor and the underlying ferromagnetic substructures in micron scale. In this work, we aimed to ... 
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 ... 
Fourier transform magnetic resonance current density imaging (FTMRCDI) from one component of magnetic flux density
(IOP Publishing, 20100517)Fourier transform (FT)based algorithms for magnetic resonance current density imaging (MRCDI) from one component of magnetic flux density have been developed for 2D and 3D problems. For 2D problems, where current is ... 
Guiding, bending, and splitting of electromagnetic waves in highly confined photonic crystal waveguides
(American Physical Society, 2001)We have experimentally demonstrated the guiding, bending, and splitting of electromagnetic (EM) waves in highly confined waveguides built around threedimensional layerbylayer photonic crystals by removing a single rod. ... 
Highconducting magnetic nanowires obtained from uniform titaniumcovered carbon nanotubes
(American Physical Society, 2004)We have shown that a semiconducting singlewall carbon nanotube (SWNT) can be covered uniformly by titanium atoms and form a complex but regular atomic structure. The circular cross section changes to a squarelike form, ... 
Highly monodisperse lowmagnetization magnetite nanocubes as simultaneous T1–T2 MRI contrast agents
(Royal Society of Chemistry, 2015)We report the first study of highly monodisperse and crystalline iron oxide nanocubes with subnm controlled size distribution (9.7 ± 0.5 nm in size) that achieve simultaneous contrast enhancement in both T<inf>1</inf> ... 
Image reconstruction for Magnetic Particle Imaging using an Augmented Lagrangian Method
(IEEE Computer Society, 2017)Magnetic particle imaging (MPI) is a relatively new imaging modality that images the spatial distribution of superparamagnetic iron oxide nanoparticles administered to the body. In this study, we use a new method based on ... 
Magnetic resonance imaging assisted by wireless passive implantable fiducial emarkers
(Institute of Electrical and Electronics Engineers, 2017)This paper reports a wireless passive resonator architecture that is used as a fiducial electronic marker (emarker) intended for internal marking purposes in magnetic resonance imaging (MRI). As a proofofconcept ... 
Magnetooptical studies of CdSe/CdMnS/CdS core/multishell colloidal nanoplatelets
(S P I E  International Society for Optical Engineering, 2016)We studied the photoluminescence (PL)) from CdSe/CdMnS/CdS core/multishell colloidal nanoplatelets, a versatile platform to study the interplay of optical properties and nanomagnetism. The photoluminescence (PL) exhibits ... 
Memoryefficient multilevel physical optics algorithm for fast computation of scattering from threedimensional complex targets
(2007)Multilevel physical optics (MLPO) algorithm provides a speedup for computing the physicaloptics integral over complex bodies for a range of aspect angles and frequencies. On the other hand, when computation of the RCS ... 
MLFMA solutions of transmission problems Involving realistic metamaterial walls
(2007)We present the solution of multilayer metamaterial (MM) structures containing large numbers of unit cells, such as splitring resonators. Integralequation formulations of scattering problems are solved iteratively by ... 
Mn2+doped CdSe/CdS core/multishell colloidal quantum wells enabling tunable carrierdopant exchange interactions
(American Chemical Society, 2015)In this work, we report the manifestations of carrierdopant exchange interactions in colloidal Mn2+doped CdSe/CdS core/multishell quantum wells. The carriermagnetic ion exchange interaction effects are tunable through ... 
Orbital magnetization of single and double quantum dots in a tightbinding model
(American Physical Society, 2003)We calculate the orbital magnetization of single and double quantum dots coupled both by Coulomb interaction and by electron tunneling. The electronic states of the quantum dots are calculated in a tightbinding model, and ... 
Oxygen partial pressure dependence of magnetic, optical and magnetooptical properties of epitaxial cobaltsubstituted SrTiO3 films
(OSA  The Optical Society, 2015)Cobaltsubstituted SrTiO3 films (SrTi0.70Co0.30O3δ) were grown on SrTiO3 substrates using pulsed laser deposition under oxygen pressures ranging from 1 μTorr to 20 mTorr. The effect of oxygen pressure on structural, ... 
Parallel preconditioners for solutions of dense linear systems with tens of millions of unknowns
(2007)We propose novel parallel preconditioning schemes for the iterative solution of integral equation methods. In particular, we try to improve convergence rate of the illconditioned linear systems formulated by the electricfield ... 
Quantum turnstile operation of singlemolecule magnets
(Institute of Physics Publishing, 2015)The timedependent transport through singlemolecule magnets coupled to magnetic or nonmagnetic electrodes is studied in the framework of the generalized master equation method. We investigate the transient regime induced ...