modelling – Page 2 – TechConnect Briefs

Ion Rejection Properties of Nanofiltration Membranes With Inhomogeneous Charge Distribution

Szymczyk A., Zhu H., Balannec B., University of Rennes 1, FR

Ion rejection properties of NF membranes with inhomogeneous fixed charge distributions are investigated theoretically. It is shown that the occurrence of spatial inhomogeneities in the fixed charge concentration may lead to an enhancement of the [...]

Ion Rejection Properties of Nanofiltration Membranes With Inhomogeneous Charge Distribution

Szymczyk A., Zhu H., Balannec B., University of Rennes 1, FR

Ion rejection properties of NF membranes with inhomogeneous fixed charge distributions are investigated theoretically. It is shown that the occurrence of spatial inhomogeneities in the fixed charge concentration may lead to an enhancement of the [...]

Control of the morphology of nanoparticles resulting from the dynamic optimization of a fed-batch emulsion copolymerization process

Benyahia B., Latifi A., Fonteix C., Pla F., University of Nancy, FR

This paper deals with the design and the control of the morphology of core-shell nanoparticles elaborated by emulsion copolymerization of styrene and butyl-acrylate in the presence of n-dodecyl mercaptan, as a chain transfer agent (CTA). [...]

Numerical Simulation of Polymer Phase Separation on a Patterned Substrate with Nano Features

Shang Y., Wei M., Kazmer D., Mead J., Barry C., University of Massachusetts-Lowell, US

Phase separation of an asymmetric immiscible binary polymer system in an elastic field with the existence of a heterogeneously functionalized substrate surface was numerically studied in 2D and 3D. An unconditionally stable method for time [...]

Drop formation mechanisms in piezo-acoustic inkjet

Wijshoff H.M.A., Océ Technologies B.V., NL

Drops are generated with a piezo inkjet device. A piezo actuator drives each channel. Drops are measured with stroboscopic illumination or high-speed camera recordings. The phenomena inside the channels are hard to measure. Modeling give [...]

Micro mixture: Size effect of micro mixing

Khelfaoui R., Benyoucef B., Colin S., ASSISTANT, DZ

A micro system is an optimized combination of elements fulfilling several complementary functions. Micro mixers applied in many fields, effective devices, for the handling of a chemical multitude of reaction, achieved objectives along ten years [...]

Modelling of Torsional Micromirrors with Springs made of Multiple Rotational Serpentine Elements

You J., Packirisamy M., Stiharu I., Concordia University, CA

In general, this paper presents the deduced analytical model and numerical simulation of electrostatically actuated torsional micromirrors with two symmetrical side springs of multiple rotational serpentine elements. Modelling of these kinds of micromirrors is carried [...]

Modeling of a New Acceleration Sensor as part of a 2D Sensor Array in VHDL-AMS

Markert E., Schlegel M., Dienel M., Herrmann G., Müller D., Chemnitz University of Technology, DE

In this paper we present an approach for modeling and simulation of a new acceleration sensor using VHDL-AMS. The sensor consists of four capacitive segments and one mass segment, aligned in a semicircle. Each capacitive [...]

Numerical Modelling of a Microfluidic Ultrasonic Particle Separator

Townsend R.J., Hill M., Harris N.R., White N.M., Beeby S.P., University of Southampton, UK

Particles held in a fluid suspension and within an acoustic standing wave experience an acoustic radiation force. The force causes particles to move to the pressure nodes of the acoustic field creating a concentrate, contributing [...]

Methodology for Prediction of Ultra Shallow Junction Resistivities Considering Uncertainties with a Genetic Algorithm Optimization

Renard C., Scheiblin P., de Crécy F., Ferron A., Guichard E., Holliger P., Laviron C., CEA-LETI, FR

The accurate prediction of arsenic activation after spike annealing is mandatory for Ultra Shallow Junction (USJ) sheet resistance optimization for advanced NMOS transistors engineering. For the first time, we propose a fast and efficient methodology [...]