Papers:
Boundary Integral Solution of Quasi-Linear Laplace Equation
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 [...]
Modeling of the Cosmic Radiation-Induced Failure Mechanism in High Power Devices
In order to achieve a more robust design of semiconductor power devices with enhanced hardness against cosmic radiation we have been working on a physical model which is able to explain and to visualize the [...]
A Method for Adding Static External Forcing to Invariant Manifolds
We present a new method for applying quasi-static forcing to invariant manifolds without breaking its invariance. This is usefull for modeling biased reduced-order models. The results from initial simulations are very promising and examples spesific [...]
FE-Simulations as a Part of a Tolerance Management System
Straube D., Germer C., Franke H-J, Triltsch U., Büttgenbach S., Technical University Braunschweig, DE
This paper reports on a software tool, which enabled tolerance management based on FE-Simulations and want to deliver impressions of the benefits of this coupling. The term tolerance management unites analysis, i.e. investigation of effects [...]
IDEA, a CAD Tool for the Design of Deformable Micro-Structures: Extension to the 2D Deformation of Arbitrarily-Shaped Membranes
A method for solving design problems involving coupled-field physics is presented: it is demonstrated in the case of the electrostatic actuation of a deformable micro-mirror. The focus of the present paper is on the inversion [...]
Ion Sources for Biomolecules with Controlled Superposition of Electric and Pneumatic Fields
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 [...]
Energetics of Non-Uniformly Alloyed Ge(Si)/Si(001) Quantum Dots
We have obtained for the first time quantitative data about the energetics of alloyed Ge/Si Quantum Dots (QDs) from atomistic simulations which take into account the non-uniformity of the alloying profile. With the algorithm we [...]
Reliability of Atomistic-Continuum Modeling Simulations for Problems in Molecular Statics
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, [...]
An Atomistic Simulation Study of Carbon Nanostructure Growth in the Porosity of Different Zeolites
Roussel T., Bichara C., Pellenq R.J.-M., Centre de Recherche en Matière Condensée et Nanosciences, CNRS, FR
In this work, we present Grand Canonical Monte-Carlo simulation results for the adsorption of carbon vapour in the pores of various zeolites: AlPO4-5, silicalite and Faujasite (both in its sodium and siliceous form). The carbon-carbon [...]
Long-Wavelength Approximation Theory of Light Reflection from Nanoscale Anisotropic Layered Media
Nanoscale anisotropic thin films and multilayers are of most interest in surface science and nanotechnology. A widespread way to probe nanometric layers is to employ optical reflection methods. But the use of exact equations to [...]
3D Atomic Holographic Optical Storage Nanotechnology
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 [...]
Multiscale Treatment of Thin-Film Lubrication
A multiscale technique that combines an atomistic description of the interfacial (near) region with a coarse-grained (continuum) description of the far regions of the solid substrates is proposed. The new hybrid technique, which represents an [...]
High Accuracy Exponential Function Generator for Analog Signal Processing
A new CMOS current-mode pseudo-exponential circuit based on the superior-order Taylor series expansion will be presented. The advantage of the circuit with respect to the previous reported similar ones is the smaller value of the [...]
Modeling of Laser Assisted Direct Imprinting Process Based on Pulsed Laser Heating and Elastodynamic Theory
Laser Assisted Direct Imprinting (LADI) is an efficient and direct way for fabricating nanostructures. In short, a quartz mold with nano-features is first pressed against a sample. Upon radiating a short laser pulse on the [...]
Parameter Preserving Model Order Reduction of a Flow Meter
Model order reduction is known to work reliably for MEMS simulations and can beused to speed up transient and harmonic computations tremendously. However, using standard model reduction techniques the generated reduced models are only able [...]
Investigation of Local-Strain Effect of the Nano-Scale Triple Gate Si/SiGe and SiN/Si Stacking MOS Transistor
The tensile strained Si, based on the misfit between Si and SiGe gives higher speed and higher drive current for the metal oxide silicon field effect transistors. Based on the strained Si technology, a tri-gate [...]
3-Dimensional Diffusion-Reaction Model for DNA Hybridization on Microarrays
Molecular diffusion limits the hybridization rate in microarrays, leading to overnight waiting times. During the last couple of years a large number of methods were developed to overcome this diffusion-limitation and to enhance the speed [...]
Electron Energy States of INAS/GAAS Quantum Ring Array
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 [...]
A Wavelet Method for the Density-Gradient Equation
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 [...]
Finite Element Modeling of Electro-Mechanical Coupling in Capacitive Micro-Systems
The aim of this paper is to deal with multi-physics simulation of micro-electro-mechanical systems (MEMS) based on an advanced numerical methodology. MEMS are very small devices in which electric as well as mechanical and fluid [...]
Model for Compression of Fullerenes and Carbon Nanotubes
This abstracts highlights methodology to use fullerene and carbon nanotubes to utilize their empty space for high pressure absorbing capabilities.
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 [...]
Linear Analysis of Large Deflection of Heated and Clamped Isotropic Layered Plate Under Initial Tension
A simplified linear problem is studied for the large deflection of a clamped and heated isotropic circular layered plate under pretension and uniform loading (Fig. 1 and 2). Including a thermal consideration, governing equations based [...]
Web Based Distributed Computing Environment for Nanotechnology
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 Parallel Intelligent OPC Technique for Design and Fabrication of VLSI Circuit
Optical lithography is the key technology used in very large scale integrated (VLSI) circuit and systemon- a-chip (SoC) fabrication [1-3]. The exposure on wafer has distortions due to the proximity effects. Hence, a correction of [...]
A Principle of Regulating the Collective Effect of Assembling Patterns in a Moderate Number of Equivalent Finite Regular Arrays of Active Nanoelements due to Local Transferring Information by Pairs Hopping under Synchronous Excitation
One reports computational study that reveals a set of general requirements fulfilling of which would afford the opportunity for using changes in ambient conditions to regulate accomplishing the collective outcome (collective effect CE) of evolution [...]
Development of a 3-D Finite-element Solver for Piezoelectric Transformer Analysis
Piezoelectric transformers step up or step down input voltages by electrical/mechanical/electrical conversion. Piezoelectric transformers have been proved to be promising alternatives for magnetic transformers. Furthermore, since the fabrication technology of thin-film piezoelectric materials becomes mature, [...]
Size Related Contribution to Electron Energy of the Quantum Ring
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 [...]
Motion of a Cylinder Partially Filled With a Nano-Ferro-Fluid Suspension in a Magnetic Field
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 [...]
Journal: TechConnect Briefs
Volume: 3, Technical Proceedings of the 2005 NSTI Nanotechnology Conference and Trade Show, Volume 3
Published: May 8, 2005
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Informatics, Modeling & Simulation
ISBN: 0-9767985-2-2