US – Page 356 – TechConnect Briefs

Motion of a Cylinder Partially Filled With a Nano-Ferro-Fluid Suspension in a Magnetic Field

Avula X.J., Washington University in St. Louis, US

This study describes the motion of a partially full cylinder containing a nano-ferrofluid suspension when subjected to magnetic and nonmagnetic forces. The cylinder is allowed to roll from a state of rest without slipping on [...]

Size Related Contribution to Electron Energy of the Quantum Ring

Filikhin I., Deyneka E., Melikian H.M., Vlahovic B., North Carolina Central University, US

The semiconductor quantum ring (QR) is studied under energy dependent effective mass approximation. The 3D ground state (confined) energy problem is solved numerically by the finite element method in a single subband approach. We obtained [...]

Web Based Distributed Computing Environment for Nanotechnology

Chen D., Raghunathan A., Mashl J., Chiu S., Parker S., Aluru N., Jakobsson E., NCSA at UIUC, US

One promising path of computational nanoscience is the integration of device design tools and computational chemistry tools to design molecular device components. In order to improve the efficiency of the design process and also let [...]

A Computational Model with Experimental Validation for DNA Flow in Microchannels

Nonaka A., Gulati S., Trebotich D., Miller G.H., Muller S., Liepmann D., UC Davis / Lawrence Livermore National Laboratory, US

We compare a computational model to experimental data for DNA-laden flow in microchannels. The purpose of this work in progress is to validate a new numerical algorithm for viscoelastic flow of an Oldroyd-B fluid. Significant [...]

A Wavelet Method for the Density-Gradient Equation

Morris H., Limon A., San Jose State University, US

As MOSFET device lengths have shrunk to submicron level, so too has the oxide thickness steadily reduced. At around 4-5nm thicknesses quantum effects start to become noticeable as electrons are able to tunnel through the [...]

Electron Energy States of INAS/GAAS Quantum Ring Array

Filikhin I., Deyneka E., Melikian G., Vlahovic B., North Carolina Central University, US

Planar array of semiconductor quantum rings is studied under the energy dependent effective mass approximation. Rectangular shape InAs quantum rings (QR) are embedded into the GaAs substrate. The 3D confined energy problem is solved numerically [...]

3D Atomic Holographic Optical Storage Nanotechnology

Thomas M.E., Colossal Storage Corporation, US

Colossal Storage Inc. has exclusive license patent rights on new ways of non - contact reading and writing with non destructive reading of information to a ferroelectric molecule. These methods will be used to develop [...]

Reliability of Atomistic-Continuum Modeling Simulations for Problems in Molecular Statics

Prudhomme S., Bauman JP., Oden J.T., The University of Texas at Austin, US

Multi-scale computational modeling aims at developing systematic techniques for bridging scales between atomistic models and continuum models in order to increase the speed of dynamical calculations. Continuum level models can simulate large volumes of material, [...]

Ion Sources for Biomolecules with Controlled Superposition of Electric and Pneumatic Fields

Hieke A., Ciphergen Biosystems, Inc., US

As previously reported the design of advanced ion sources for collisionaly cooled biomolecules required the development of an advanced multi-physics simulation system GEMIOS (Gas and Electromagnetic Ion Optical Simulator). Recent research based on such GEMIOS [...]

Boundary Integral Solution of Quasi-Linear Laplace Equation

Ding J., Ye W., Georgia Institute of Technology, US

An Integral approach based on the p-FTT acclerated BEM, which requires only surface discretization, has been developed for solving nonlinear equations. Examples of a Helmholtz and a quasi-linear Laplace problems in both a spherical domain [...]