Papers – Page 17 – TechConnect Briefs

Numerical Computation of Dispersion Relations for Multi-layered Anisotropic Structures

Botkin N.D., Hoffmann K-H, Pykhteev O.A., Turova V.L., Center of Advanced European Studies and Research, DE

The paper presents an algorithm and a program for the computation of the propagation velocity of acoustic waves excited in anisotropic multi-layered structures. This investigation is motivated by the modeling of a biosensor that serves [...]

An Efficient Multiscale-Linking Algorithm for Particle Deposition

Magan R.V., Sureshkumar R., Washington University, US

A multiscale-linking computer simulation of irreversible deposition of particles is developed by integrating mesoscopic Brownian dynamics simulations with continuum level conservation laws. The algorithm accounts for the flux of the particles from the bulk suspension [...]

Computational Challenges in Nanoscale Device Modeling

Polizzi E., Sameh A., Sun H., Purdue University, US

The development of new simulation tools is critical for the exploration of quantum transport in nanoscale devices. Such simulation is commonly performed by solving self-consistently the transport problem using The Non-Equilibrium Green's Functions (NEGF) formalism [...]

Investigation of dsDNA Stretching Meso-mechanics using Finite Element Method

Yuan C.A., Chiang K.N., National Tsing Hua University, TW

A novel finite element model with equivalent meso-mechanics theory is proposed herein to simulate the dynamic structural transitions of the double strand DNA (dsDNA) under external loading. Moreover, the meso-mechanics of dsDNA molecules is then [...]

The Two-Layer ONIOM Technique in the Studies of Chemical Reactions on Carbon Nanotube Tips

Basiuk E.V., Basiuk V.A., Basiuk E.V., Basiuk V.A., Universidad Nacional Autonoma de Mexico, MX

In continuation of our combined quantum mechanics/molecular mechanics (QM/MM) studies of selective amidation (reaction 1) and esterification (reaction 2) of monocarboxy-substituted tips of zigzag and armchair single-walled carbon nanotube (SWNTs), we studied theoretically the interaction [...]

Modeling the Fluid Dynamics of Electro-Wetting on Dielectric (EWOD)

Walker S., Shapiro B., University of Maryland, US

By applying voltages across a liquid droplet and an underlying dielectric, it is possible to make dielectric forces compete with surface tension forces, and to thereby cause the liquid droplet to change shape. This effect [...]

Dealing with Stiffness in Time-Domain Stokes Flow Simulation

Coelho C.P., White J.K., Silveira L.M., MIT - RLE, US

As microfluidic devices become more common and more elaborate, it becomes necessary to develop simulation tools that allow the efficient and yet accurate three dimensional time-domain analysis of the behavior of these devices. Detailed time [...]

The Model of Porous Media – Complete Description for Aggregation of Bead-Monolayers in Flat Microfluidic Chambers

Grumann M., Dobmeier M., Schippers P., Brenner T., Zengerle R., Ducrée J., IMTEK, University of Freiburg, DE

In this paper we for the first time adopt the model of porous media to simulate the complete course of the formation of monolayers from bead suspensions in a flat microfluidic chamber. The chambers are [...]

An Integrated Transport Model for Tracking of Individual Exocytotic Events Using a Microelectrode

Fan T.H., Fedorov A.G., Georgia Institute of Technology, US

A complex biophysical process underlying the release of neurotransmitters and hormones from the secretion cells, known as a vesicular exocytosis, is an important mechanism that defines cell signaling and intercellular communication. This phenomenon has been [...]

Taylor Dispersion in Electroosmotic Flows with Random Zeta Potentials

Gleeson J.P., Stone H.A., University College Cork, IE

Electroosmotic flows are extensively employed for fluid transport and sample separation in lab-on-a-chip technologies, capillary zone electrophoresis, and generally in channels and capillaries with length scales on the order of 100 microns or less. Experimental [...]