Sharif Digital Repository

Fast convergent and unconditionally stable galerkin's method with adaptive hermite-gauss expansion for guided-mode extraction in two-dimensional photonic crystal based waveguides

Author

Sarrafi, P.

Publisher

Optical Society of American (OSA),

Pub. Year

2009

Subjects

Adaptive algorithms. / Convergence of numerical methods. / Crystal atomic structure. / Electric fields. / Electromagnetic fields. / Functions. / Galerkin methods. / Integrated optoelectronics. / Photonic crystals. / Probability density function. / Waveguides. / Basis functions. / Complicated geometries. / Convergence rates. / Coupled-resonator optical waveguides. / Crystal line defect waveguides. / Effective algorithms. / Galerkin's methods. / Gauss basis functions. / Guided modes. / Hermite. / Mode extractions. / Numerical instabilities. / S matrixes. / Spurious modes. / Spurious solutions. / Two-dimensional photonic crystals. / Unconditionally stables. / Two dimensional.

Surface electromagnetic waves supported by nano conducting layers with inhomogeneities in the conductivity profile

Author

Sarrafi, P.

Pub. Year

2008

Subjects

Asymptotic behaviors. / Charge layers. / Conducting interface. / Conducting layers. / Galerkin's method. / Inhomogeneities. / Inhomogeneous structures. / Surface conductivity. / Surface electromagnetic waves. / Cements. / Electric conductivity. / Electromagnetic wave diffraction. / Electromagnetic wave scattering. / Electromagnetic waves. / Electromagnetism. / Surface charge.

The influence of the ratio of "rotational speed/traverse speed" (ω/v) on mechanical properties of AZ31 friction stir welds

Author

Abbasi Gharacheh, M.

Pub. Year

2006

Subjects

Magnesium alloys. / Parameter estimation. / Rotation. / Shear strength. / Speed control. / Welds. / AZ31 magnesium alloy. / Friction Stir Welding (FSW) / Incomplete root penetration. / Shear punch test (SPT) / Friction welding.

Application of the splitting approach to solve population balance equations in chemical processes

Author

Bastani, D.

Pub. Year

2009

Subjects

Particle size distributions. / Analytical solutions. / Break-up. / Breakage kernel. / Bubble size distributions. / Chemical process. / Classes method. / Classes methods. / Different process. / Kinetic equations. / Operator splitting technique. / Parallel type. / Population balance equation. / Population balances. / Product quality. / Time step. / Bubbles (in fluids) / Chemical industry. / Coalescence. / Color. / Fluid dynamics. / Fluorine containing polymers. / Integral equations. / Mathematical operators. / Multiphase flow. / Power spectral density. / Process engineering. / Pulse shaping circuits. / Size distribution. / Agglomeration.

"Bubble bunch" phenomenon in operation of a bubble column

Author

Bastani, D.

Pub. Year

2009

Subjects

Bubble bunch. / Bubble coalescence. / Bubble columns. / Interfacial area. / Interfacial tension.

Greatly reduced radiation loss in planar waveguides with two-dimensional conducting interfaces

Author

Sarrafi, P.

Pub. Year

2008

Subjects

Boundary conditions. / Boundary value problems. / Cladding (coating) / Fins (heat exchange) / Waveguides. / Boundary conditioning. / Conductive nanolayers. / New strategy. / Numerica l results. / Planar waveguides. / Radiation losses. / Slab waveguides. / Surface conductances. / Two dimensional.

Analytical extraction of leaky modes in circular slab waveguides with arbitrary refractive index profile

Author

Sarrafi, P.

Pub. Year

2007

Subjects

Boundary conditions. / Brillouin scattering. / Eigenvalues and eigenfunctions. / Optical losses. / Polynomial approximation. / Refractive index. / Circular slab waveguides. / Hankel function. / Legendre polynomial basis functions. / Circular waveguides.

Hermite polynomial expansion for analysis of electromagnetic slow waves in coupled nano conducting layer with Gaussian profile

Author

Sarrafi, P.

Pub. Year

2007

Subjects

Eigenvalues and eigenfunctions. / Gaussian noise (electronic) / Interfaces (computer) / Optical waveguides. / Polynomials. / Charge layers. / Dielectric slab waveguides. / Film-cover interfaces. / Hermite polynomials. / Electromagnetic wave propagation.

Evaluation of microstructure and mechanical properties in friction stir welded A356 + 15%SiCp cast composite

Author

Amirizad, M.

Pub. Year

2006

Subjects

Composite materials. / Elastic moduli. / Friction. / Joining. / Mechanical properties. / Microstructure. / Plastic deformation. / Seam welding. / Tools. / A356+155 Sic p composites. / Friction stir welding. / Localized frictional heat. / Welding.

Determination of complex modes in photonic crystal waveguides using the phase variation in characteristic coefficients

Author

Hosseinnia, A. H.

Publisher

OSA Pub,

Pub. Year

2012

Subjects

Complex modes. / Electromagnetic eigenmodes. / Frequency-domain methods. / Leakage loss. / Line defects. / Phase variation. / Photonic crystal waveguide. / Photonic structure. / Plane wave. / Reflection and transmission coefficients. / Two-dimensional photonic crystals. / Defects. / Frequency domain analysis. / Laser optics. / Photonic crystals. / Optical waveguides.

Evaluation of microstructure and mechanical properties of aluminum to copper friction stir butt welds

Author

Sarrafi, R.

Pub. Year

2011

Subjects

Base metals. / Butt joints. / Butt welds. / Copper atoms. / Dissimilar welding. / Friction stir. / Friction stir welds. / Harmful effects. / High quality. / High strength. / Mechanical stirring. / Microstructural features. / Microstructure and mechanical properties. / Properties and microstructures. / Solid-state welding process. / Stir zones. / Tensile loading. / Tensile tests. / Ultimate tensile strength. / Weld microstructure. / Welding process. / Aluminum. / Butt welding. / Copper. / Electric welding. / Friction. / Gas welding. / Heat affected zone. / Intermetallics. / Mechanical properties. / Microstructural evolution. / Stainless steel. / Tensile strength. / Tensile testing. / Tribology. / Friction stir welding.

An efficient approach toward guided mode extraction in two-dimensional photonic crystals

Author

Sarrafi, P.

Pub. Year

2008

Subjects

Crystal defects. / Finite difference time domain method. / Harmonic generation. / Matrix algebra. / Ordinary differential equations. / Photonic crystals. / Waveguides. / Coupled resonator optical waveguides. / Defect modes. / Guided mode extraction. / Photonic crystal waveguides. / Guided electromagnetic wave propagation.

Analytical analysis of H polarized line-defect modes in two-dimensional photonic crystals based on hermite expansion of floquet orders

Author

Sarrafi, P.

Pub. Year

2007

Subjects

Defect lines. / Differential transfer matrix. / Effective index theory. / Hermite polynomials. / Band structure. / Electromagnetic field effects. / Light polarization. / Nonlinear equations. / Photonic crystals. / Transfer matrix method. / Crystal defects.

Network vulnerability analysis through vulnerability take-grant model (VTG)

Author

Shahriari, H. R.

Pub. Year

2005

Subjects

Algorithms. / Graph theory. / Mathematical models. / Polynomials. / Security of data. / Bounded polynomial algorithm. / Vulnerabilities rewriting rules. / Vulnerability take-grant model (VTG) / Information analysis.

Sequence dependence of the binding energy in chaperone-driven polymer translocation through a nanopore

Author

Abdolvahab, R. H.

Pub. Year

2011

Subjects

Binding affinities. / Binding proteins. / Mean first passage time. / Monomer types. / Nearest-neighbors. / Polymer translocation. / Potential gradients. / Stiff polymers. / Trans side. / Translocation dynamics. / Monomers. / Nanopores. / Nuclear energy. / Polymers. / Potential energy. / Binding energy.

First passage time distribution of chaperone driven polymer translocation through a nanopore: Homopolymer and heteropolymer cases

Author

Abdolvahab, R. H.

Pub. Year

2011

Subjects

Advection diffusion equation. / Characteristic exponents. / Dimensionless parameters. / First passage time. / First passage time distributions. / Heterogeneous polymers. / Mean waiting time. / Monte Carlo Simulation. / Polymer translocation. / Power-law dependences. / Reaction coordinates. / Stiff polymers. / Translocation dynamics. / Translocation process. / Waiting time. / Advection. / Binding energy. / Chain length. / Electron transitions. / Monte Carlo methods. / Nanopores. / Partial differential equations. / Polymers. / Probability distributions. / Probability density function. / Polymer. / Chemical model. / Chemistry. / Nanopore. / Computer Simulation. / Diffusion. / Models, Chemical. / Monte Carlo Method.

Reply: Abedpour, asgari, and tabar

Author

Abedpour, N.

Pub. Year

2011

Irreversibility in response to forces acting on graphene sheets

Author

Abedpour, N.

Pub. Year

2010

Subjects

Graphene sheets. / Relaxation mechanism. / Ripple structure. / Sample sizes. / Structural parameter. / Suspending structures. / Graphite. / Graphene.

Analysis of design goals of cryptography algorithms based on different components

Author

Molk, A.M.N.G.

Publisher

Institute of Advanced Engineering and Science,

Pub. Year

2021

Subjects

Analysis. / Telemedicine. / IoT. / Cryptography algorithms. / Component.