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Search Publications by: Vinod Tewary (Fed)

Displaying 76 - 100 of 117

Continuum Dyson's Equation and Defect Green's Function in a Heterogeneous Anisotropic Solid

July 1, 2004

Author(s)

B Yang, Vinod Tewary

Continuum Dyson's equation and defect Green's function (GF) in a heterogeneous, anisotropic and linearly elastic solid under homogeneous boundary conditions have been introduced. The continuum Dyson's equation relates the point-force Green's responses of

Elastostatic Green's Function for Advanced Materials Subject to Surface Loading

July 1, 2004

Author(s)

Vinod K. Tewary

Effects of Laterally and Vertically Neighboring Quantum Dots on Formation of a New Quantum Dot

May 1, 2004

Author(s)

B. Yang, Vinod Tewary

We apply the elastic energy release rate (EERR) to identify the favored location ofquantum dot (QD) formation in the presense of a laterally or vertically neighboring grown QD on a linear anisotropic elastic substrate. The EERR is defined as the relaxation

Multiscale Modeling of Mechanical Response of Quantum Nanostructures

May 1, 2004

Author(s)

Vinod K. Tewary, B Yang

A multiscale Green's function method is described for modeling the mechanical response of quantum nanostructures in semiconductors. The method accounts for the discreteness of the lattice in and around the nanostructure, and uses the continuum Green's

Multiscale Green's-Function Method for Modeling Point Defects and Extended Defects in Anisotropic Solids: Application to a Vacancy and Free Surface in Copper

March 1, 2004

Author(s)

Vinod K. Tewary

A multiscale Green's function method is described for modeling of point defects such as vacancies and interstitals together with extended defects such as free surfaces and interfaces in a general anisotropic solid. The method treats the point defects at

Multiscale Modeling of Quantum Nanostructures Using Integrated Green's Function and Molecular Dynamics

February 2, 2004

Author(s)

Vinod K. Tewary, David T. Read

Three-Dimensional Green's Functions in Multilayered Anisotropic Piezoelectric Materials

February 2, 2004

Author(s)

B Yang, E Pan, Vinod Tewary

Three-dimensional Green's functions due to a point force and a point charge in multilayered anisotropic piezoelectric materials have been derived within the framework of generalized Stroh formalism and two-dimensional Fourier transforms. The material in

Formation of a Surface Quantum Dot Near Laterally and Vertically Neighboring Dots

July 1, 2003

Author(s)

B Yang, Vinod Tewary

Elastic energy release rate (EERR) of a surface quantum dot (QD) near laterally and vertically neighboring seed QDs in a linear anisotropic elastic substrate iscalculated. An efficient boundary element method is used to solve the three-dimensional boundary

The NSF NSDL GREEN Digital Library: Green's Functions Research and Education Enhancement Network

July 1, 2003

Author(s)

Laura M. Bartolo, Aadam C. Powell, G M. Shreve, Vinod Tewary

Green's functions are powerful mathematical tools with strong pedagogical value providing not only solutions to difficult problems but also visualization for understanding phenomena. The majority of upper division engineering and materials science students

Change in Low Temperature Thermodynamic Functions of a Solid Due to Quantum Dots

November 27, 2002

Author(s)

Vinod K. Tewary

Simple expressions are derived for the spectrum of low frequency phonon modes perturbed bythe presence of a quantum dot in a solid using the phonon Green's function for the Debye model.The changes in the Helmholtz free energy and the constant volume

Elastic Properties of Hardness Coatings Using Surface Acoustic Wave Spectroscopy

October 1, 2002

Author(s)

Donna C. Hurley, A J. Richards, Vinod K. Tewary, A Bendavid, P J. Martin

Surface acoustic wave (SAW) spectroscopy is a nondestructive way to determine the properties of thin films. Plane-wave SAWs are generated by a line-focused, pulsed laser and detected by a Michelson interferometer. Phase velocity dispersion relations over

Theory of Elastic Wave Propagation in an Anisotropic Film on an Anisotropic Substrate: TiN Film on Single Crystal Si

September 1, 2002

Author(s)

Vinod K. Tewary

The delta function representation of the elastodynamic Green's function is used to derive an expression for the elastic wave forms on the surface of an anisotropic thin film on an anisotropic substrate due to a point or a line source located at the surface

Lattice Statice Green's Function Method for Multiscale Modeling of Point Defects and Extended Defects in Solids

July 1, 2002

Author(s)

Vinod K. Tewary

A method for multiscale modeling of point defects such as vacnacies and interstitials at the atomistic level and extended defects such as free surfaces and interfaces at the macroscopic continuum level in a solid is described. The method is based upon the