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You searched on: Author: Vinod Tewary

Displaying records 1 to 10 of 50 records.
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1. Nanophotonics: From Quantum Confinement to Collective Interactions in Metamaterial Heterostructures
Published: 3/18/2015
Authors: Anna L. Rast, Vinod K Tewary
Abstract: Nanophotonic materials have unique properties that are due to behavior on the quantum scale, as well as properties that emerge due to collective interactions within the system. These collective interactions may include complex quasiparticle interact ...

2. Multiscale Green‰s functions for modeling of nanomaterials: Bridging length and time scales
Published: 3/17/2015
Author: Vinod K Tewary
Abstract: Green's function gives the response of a system to a probe and is a powerful technique for solving a variety of problems in science and engineering. We describes a multiscale Green's function method for modeling nanomaterials at different length and ...

3. Particle-based simulation of nanoscale systems and materials
Published: 1/1/2015
Authors: Alexander Y Smolyanitsky, Vinod K Tewary
Abstract: This book chapter is focused on the introduction of molecular dynamics (MD) and molecular statics (MS), as well as some of their uses for studying the thermomechanical and (indirectly) electronic properties at the nanoscale. We first introduce th ...

4. Electron Energy Loss Function of Silicene and Germanene Multilayers on Silver
Published: 11/4/2013
Authors: Anna L. Rast, Vinod K Tewary
Abstract: We calculate electron energy loss spectra (EELS) for composite plasmonic structures based on silicene and germanene. A continued-fraction expression for the effective dielectric function is used to perform multiscale calculations of EELS for both ...

5. Stratified Graphene-Noble Metal Systems for Low-Loss Plasmonics Applications
Published: 1/30/2013
Authors: Anna L. Rast, Timothy Sullivan, Vinod K Tewary
Abstract: We demonstrate numerically that bulk plasmon losses in noble metal films can be significantly reduced through the addition of a graphene coating and hexagonal boron nitride substrate. Silver films with a trilayer graphene coating and hBN substrate ...

6. Manipulation of graphene‰s dynamic ripples by local harmonic out-of-plane excitation
Published: 1/11/2013
Authors: Alexander Y Smolyanitsky, Vinod K Tewary
Abstract: With use of carefully designed molecular dynamics simulations, we demonstrate tuning of dynamic ripples in free-standing graphene by applying a local out-of-plane sinusoidal excitation. Depending on the boundary conditions and external modulation, we ...

7. Effect of elastic deformation on frictional properties of few-layer graphene
Published: 1/9/2012
Authors: Alexander Y Smolyanitsky, Jason Philip Killgore, Vinod K Tewary
Abstract: We describe the results of Brownian dynamics (BD) simulations of an AFM tip scanned on locally suspended few-layer graphene. The effects of surface compliance and sample relaxation are directly related to the observed friction force. We demonstrate t ...

8. Phenomenological interatomic potentials for silicon, germanium and their binary alloy
Published: 10/17/2011
Author: Vinod K Tewary
Abstract: A phenomenological potential is constructed for interatomic interactions in silicon, germanium, and their binary alloy. The potential is based upon the same physical principles as the modified embedded atom potential (MEAM) but is different in detail ...

9. Modeling electromigration using the peridynamics approach
Published: 8/28/2011
Authors: David Thomas Read, Walter Gerstle, Vinod K Tewary
Abstract: This chapter presents a summary of the information and reasoning needed to justify learning about peridynamics for the purpose of analyzing electromigration and provides guidance for the development of a complete peridynamics analysis. The additions ...

10. Graphene-metal interconnect: an atomistic simulation
Published: 8/11/2011
Authors: Alexander Y Smolyanitsky, Vinod K Tewary
Abstract: We develop a set of computationally efficient and accurate interatomic interactions for an atomistic simulation of the properties of graphene on nickel surface. The approach is based on the modified embedded atom method (MEAM) for the C-C and Ni-Ni i ...

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