Papers:
Tailoring Molecular Devices for its Electronic Properties
In present work we studied Conduction properties of nanoscale contacts DFT/NEGF approach. Such calculations give insight into details behind the conductance that is not readily available in experiments. For example, we may learn how the [...]
From Games and Films to Molecular Simulation and Design
Propelled by the multi-billion dollar game and film industries, CG software has evolved dramatically in sophistication. Effects range from realistic explosions to the chaotic movement driven by wind and other fluids. This paper describes our [...]
Multiscale Rheology: New Results for the Kinetic Scale
We present several new results on the kinetic, i.e., mesoscale, level of a continuum-kinetic-microscopic approach to multiscale modeling of complex fluids. We choose the microscopic level as Kramers’ bead-rod model for polymers, which we describe [...]
The Self-Assembly of Nano-Objects code (SANO-Grid) using Grid Interpolation technique: Application to epitaxial organic monolayers adsorbed on metal surfaces
One of the main challenges is to precisely position the first molecular building blocks in the first layer of thin films in order to tune their hetero-epitaxial properties, or else to adjust the substrates for [...]
Simulation-Based Evolutionary Approach to Electrical Characteristic Optimization of Silicon Solar Cells
Solar cell [1], which can provides renewable and clean energy by converting sunlight to electrical power, is one of the most promising energy technologies in order to relieve the impact of the climate change. Yet, [...]
Design of Microassembly through Process Modeling in Virtual Reality
In this work we discuss how construction of microsystems via microassembly can be optimized through simulation of the entire process in virtual reality prior to actual execution. We exercise a holistic approach towards microscale manufacturing [...]
Electromechanical and Electromagnetic Simulation of RF-MEMS Complex Networks Based on Compact Modeling Approach
RF-MEMS, i.e. MicroElectroMechanical-Systems for Radio Frequency applications, have been attracting the interest of the scientific community for more than one decade, thanks to their high performance and large reconfigurability. The employment of RF-MEMS based devices [...]
Simulation of Field-Plate Effects on Surface-State-Related Lag and Current Slump in GaAs FETs
In this study, we carry out two-dimensional transient analysis of field-plate GaAs MESFETs by taking surface states into account. Quasi-pulsed current-voltage curves are derived from the transient characteristics. We show that drain lag and current [...]
Performance Study of Nitride-Based Gunn Diodes
In this work, we assess the performance of InN Gunn diodes, as a superior alternative to GaN. We perform two-dimensional mixed-mode device/circuit simulation accounting for self-heating effects. We verify available theoretical results for GaN-based Gunn [...]
Bottom-up device simulations: modeling electrical currents on the atomic scale
As device features approach atomic dimensions, simulations of electrical currents need to be based on a quantum-mechanical description of the system. New phenomena then appear which can be exploited for novel device functionality, but also [...]
Advanced physics for simulation of ultrascaled devices with UTOXPP Solver
As the conventional scaling down of MOSFET dimensions faces physical and economical limits, the performances of novel solutions such as high-K dielectrics, mechanical strain and substrate orientation or alternative device structures, such as fully-depleted SOI [...]
A Negative Index Metamaterial Waveguide for De-Multiplexing
Vidal X., Baev A., Furlani E.P., Prasad P.N., The Institute for Lasers, Photonics and Biophotonics, US
In this presentation, we propose a novel metamaterial-based waveguide coupler for use as a de-multiplexer at telecommunication wavelengths. Currently, there have been relatively few studies of guided modes in left-handed waveguides; these have indentified some [...]
A Regional Model for Threshold Switching in Phase Change Memory
In this paper, a regional model for threshold switching is presented based on the space charge effect in Phase Change Memory (PCM). In this model, the PCM unit is divided into two parts according to [...]
CFD-Assisted Design and Optimization of a Pharmacokinetic Microfluidic System
In this research, a microfluidic system was designed and optimized to carry out in vitro pharmacokinetic studies of drug candidates in the liver. Computational fluid dynamics (CFD) was called on to assist in the system [...]
Numerical Study on the Mixing Performance of Ring-Type Electroosmotic Micromixer with Configurations of Obstacle in the Mixing Chamber
Rapid and efficient mixing is important for many microfluidic applications but challenging process in many microfluidic systems that perform complex chemical synthesis and analysis. Most existing microfluidic mixing systems are limited to low Reynolds number [...]
SUGARX: A Online Tool That Bridges the Gap Between Experiment and Simulation
We present a pioneering online tool called SugarX that, for the first time, bridges the gap between experiment and simulation. Our tool is available online at nanoHUB.org with remote experimental control and simulation. A web [...]
Smectic structure of Nano Crystalline Cellulose Established by Large-Scale Parallel Molecular Dynamic Simulations
Structural and optical properties of Nano Crystalline Cellulose (NCC) in liquid solutions and in solid films were investigated by large-scale parallel molecular dynamics (MD) simulation using empirical Coulombian interaction potentials. Our calculations give a good [...]
Dissipative Intrinsic Localized Modes in Nano-ferroelectrics
Biswas A., Chowdhury K., Bandyopadhyay A.K., Bhattacharjee A.K., Mandal D., Dumkal Institute of Engg. & Technology, IN
Ferroelectrics are important materials for optical communication and other important areas of applications where discreteness and nonlinearity causes the formation of intrinsic localized modes that can transport energy with the help of the lattice. Based [...]
Calculated Production Yields in Metallofullerene Series
The paper reports computations for all lanthanoids L on their encapsulation into the only C74 IPR (isolated pentagon rule) cage (L@C74), for Z@C82 based on encapsulation into the IPR C2v C82 cage, and also for [...]
Carbon Nanotube Field Effect Transistor (CNTFET) 2-D Channel Electrostatic Potential Model for TCAD Application
A 2-D channel electrostatic potential model of CNTFET is presented. The model is developed by directly solving Laplace’s equation in cylindrical coordinates with appropriate boundary conditions. To the best of our knowledge, the Technology Computer [...]
Lumped Modeling of Carbon Nanotubes for M/NEMS Simulation
The construction and analysis of the CNT structure is extremely difficult and requires expertise in nanostructure physics. This limits access to molecular dynamics specialists and does not allow the exploration of CNTs as components of [...]
Application of a Nanoclay-Polypropylene Composite to Efficient Vehicle Occupant Safety Countermeasure Design
Polypropylene (PP) which is a thermoplastic polymer is extensively used in various shades and textures for designing interior trim of vehicles for covering metallic body bestowing an aesthetic and pleasing look as well as providing [...]
Modeling a plane 3 DOF compliant micromanipulator
In the present work, a new MBS (Multi-Body System) code has been dedicated to the static and dynamic analysis of micro-compliant mechanisms. Although the inertial force become more and more negligible, the smaller becomes the [...]
Simplifying the Designing of a MEMS-based Nanoscale Material Testing Device
Microelectromechanical-systems (MEMS) are increasingly used for accurate mechanical characterization of nanostructures. However, the performance of such systems highly depends on their structural design. Optimizing the performance of the device using distributed analysis is computationally expensive, [...]
Nonparabolicity Effects of the Ultra-thin Body Double-gate MOSFETs
In this paper, the band-structure of ultra-thin body (UTB) double-gate (DG) MOSFETs is calculated by empirical tight-binding model, and the the nonparabolicity effects are included in the model by the modified Schrödinger equation with the [...]
An Efficient Iterative Grid Selection Strategy for Time-Mapped Harmonic Balance Method
In this paper, a new iterative grid selection strategy for the Time-Mapped Harmonic Balance (TMHB) method is presented. This strategy is referred to the adaptive grid methods, which tracks the rapid transitions and constructs a [...]
High-Fidelity Modeling of Single Molecule Quantum Electronic Devices
Departing from two-terminal molecular electronic devices, this paper examines multi-terminal MEdevices. These devices are envisioned to be utilized in emerging molecular gates (Mgates) and neuronal hypercells for expected molecular integrated circuits. High-fidelity modeling and heterogeneous [...]
The role of Electromechanical coupling in AlGaN/AlN/GaN HEMTs
we present simulation results for GaN HEMTs in which the structure has additional AlN spacer layer thus completely modifying the electromechanical coupling approach.
A Drift-Diffusion Model of Pinned Photodiode Enabling Opto-Electronic Circuit Simulation
A drift-diffusion analytical model with bounded boundary conditions for CMOS Image Sensor (CIS) in a vertical pinned photodiode (PPD) is presented in this paper. According to the comparison with the numerical simulation and measured data, [...]
Compact Modeling of Signal Transients and Integrity Analysis for Dispersionless Interconnect
In this paper, a compact model for transient response of the dispersionless interconnects is rigorously derived with resistive, inductive and capacitive load terminations. The proposed compact models are verified by the HSPICE simulation result to [...]
Neuromorphic Logic Networks and Robust Stochastic Computing Under Large Perturbations and Uncertanties
This paper contributes to robust fault-tolerant neuromorphic computing for expected nano-centric processing hardware. We develop: (a) A library of neuromorphic networks for elementary logic function in order to enable the design of an arbitrary complexity [...]
A Systems Design Framework Based in Matlab That Integrates Sugar, Spice, Simulink, Fea Comsol, and GDS-II Layout
We present a systems design framework called iSUGAR that integrates SUGAR, SPICE, SIMULINK, FEA COMSOL, and GDS-II layout. SUGAR is known for its ease and speed of complex MEMS configuration and parameterization; SPICE is known [...]
A Model for Enhanced Chemiluminescence Reactions in Microsystems
Detection of hybridized targets—like DNA strands—in microsystems for biotechnology is usually done by fluorescence. However, recent investigations have shown that chemiluminescence could be a more effective and sensitive tool for detection under the condition that [...]
An Online Mems Design Tool That Lays Out and Simulates a Parameterized Array from a Reference Device
We present an online MEMS design tool that lays out and simulates a parameterized array from a reference device. These automated features are implemented in our tool called SugarCube, which is readily available on nanoHUB.org. [...]
Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2011: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational
Published: June 13, 2011
Industry sector: Advanced Materials & Manufacturing
Topic: Informatics, Modeling & Simulation
ISBN: 978-1-4398-7139-3