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See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.

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Effect of Electrical Field Distortion on Particle-Particle Interaction Under DEP

G. Zhang[1], Y. Zhao[1], J. Hodge[1], J. Brcka[2], J. Faguet[2], E. Lee[2]
[1]Clemson University, Clemson, SC, USA
[2]TEL U.S. Holdings, Inc., U.S. Technology Development Center, Austin, TX, USA

In using DEP for particle manipulation, researchers often use a formula to calculate the DEP forces in which the forces are proportional to the particle radius to the third power. This formula assumes that the electrical field, E, will not be affected by the presence of a particle, no ... Read More

Joule Heating in Electroosmotically Driven Circular Constriction Microchannel

U. Sanjay [1], P. Sarith[2], R. Ajith Kumar[1]
[1]Amrita Vishwa Vidhyapeetham, Kollam, Kerala, India.
[2]National institute of Technology, Calicut, Kerala, India.

Liquid transport in lab-on-a-chip (LOC) devices occurs through a microchannel that uses an electroosmotic flow actuation mechanism. This method has a plug-like velocity profile, which is ideal in species transport and in wall-bounded reactions. Under substantial joule heating, it is not ... Read More

Simulation of Thermal Transport Based Flow Meter for Microfluidics Applications

E. Byas[1], A. Arevalo[1], I.G. Foulds[1]
[1]King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

COMSOL Multiphysics® is used to simulate a thermal transport based flow sensor, which will be embedded in a micro-channel of a Poly-methyl methacrylate (PMMA) based microfluidic device. The channel height is 100μm and for simulation purposes the lengths has been set to 1.2mm. The heater ... Read More

Modeling of Charge Transport in Ion Bipolar Junction Transistors

A.V. Volkov[1], K. Tybrandt[1], I.V. Zozoulenko[1], M. Berggren[1]
[1]Organic Electronics, ITN, Linköping University, Norrköping, Sweden

Modeling of an ion bipolar junction transistor (IBJT) is performed using the COMSOL Multiphysics® software. Our model describes the IBJT which was developed and characterized [1]. The IBJT under consideration consists of an anion-selective collector and emitter, a cation-selective base ... Read More

Optimized Channel Geometry of a Flow-Focusing Droplet Generator for Parallelization

D. Conchouso[1], E. Al Rawashdeh[1], D. Castro[1], A. Arevalo[1], I.G. Foulds[1]
[1]King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

This document presents the Computational Fluid Dynamics (CFD) simulation of a commonly used Microfluidic Droplet Generator (MFDG) using the Laminar Two-Phase Flow, Phase Field method in COMSOL Multiphysics®. The paper discusses the effect of the channel’s geometry in droplet size at ... Read More

Modeling Partially Absorbing Biosensors

D. Kappe[1], A. Hütten[1]
[1]Bielefeld University, Bielefeld, Germany

Designing and constructing a lab-on-a-chip device poses a variety of questions. Transport of all required substances, detection of the analyte and its deposition on a sensor have to be incorporated. Different strategies have been developed to achieve good coverages of the sensor, like ... Read More

Air Foil Bearings - A Modeling Approach

M. Bezemer-Krijnen[1], Y.H. Wijnant[1], A. de Boer[1]
[1]University of Twente, Enschede, The Netherlands

A first generation air foil bearing (AFB) is shown in Figure 1. AFBs induce, at higher rotating speeds, an air film between the journal and the top foil, which lowers the friction forces. The goal of this study is to develop a model of an AFB. The thickness of the air film depends on ... Read More

Behavior Models of Virtual Impactors

R. Haft[1]
[1]Lawrence Berkeley National Laboratory, Hayward, CA, USA

A pocket-size portable particle size detector for diesel and cigarette smoke aerosols is being designed using particle size and composition methods. Aerodynamics, fluid properties, material composition and aerosol composition are taken into account. Testing methods for the design include ... Read More

Surface Acoustic Wave Properties (SAW) and Acoustic Streaming Characterization for Annular and Curved Electrodes on 128˚ Y-Cut, X-Propagating LiNbO3

G. Potter[1], N. Tokranova[1], S. Gattu[1], J. Castracane[1]
[1]SUNY College of Nanoscale Science and Engineering, Albany, NY, USA

Microfluidic devices and lab-on-a-chip (LOC) require the ability to transport or pump reagents or reaction products, the ability to effectively mix small volumes of fluid, and provide direct data display. Surface acoustic wave (SAW) driven acoustic streaming generated by a piezoelectric ... Read More

Sensitivity Optimization of Microfluidic Capacitance Sensors

S. Satti[1], M. Baghini[1]
[1]Indian Institute of Technology Bombay, Mumbai, Maharashtra, India

As a part of a lab-on-chip-device, more often it is required to measure dielectric constant of the fluid. For this purpose it is necessary to develop a sensor whose size is compatible with microfluidic channel. The work, presented in this paper, studies effect of the parameters ... Read More

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