Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Stress Evolution due to EM in Metal Line Confined: Model and Correlation with Experiments - new

G. Marti [1], L. Arnaud [2], Y. Wouters [3]
[1] STmicrolectronics & Univ. Grenoble Alpes-SIMAP, France
[2] Cea-Leti Minatec, Grenoble, France
[3] Univ. Grenoble Alpes-SIMAP, Grenoble, France

Electromigration induced failure is one of the main reliability issues for the microelectronics industry. The continuous scaling of the interconnect dimensions leads to higher operating current densities and temperatures, which accentuates the electromigration failure. As a consequence, electromigration still poses challenges for the development of the new technological nodes. Electromigration ...

Development of a Laser Cladding Process Model - new

F. Wirth [1], K. Wegener [1],
[1] IWF, ETH Zürich, Switzerland

Additive manufacturing is attracting more and more interest. Laser Cladding is one of these additive manufacturing processes. For this a quasi-stationary physical based 3D process model is presented, which has been developed taking into account heat transfer, melt pool fluid flow including surface tension effects (Marangoni convection) and free surface movement. Thereby the resulting surface ...

Simulating Organogenesis in COMSOL: Towards Efficient 3D Simulations of Organogenesis - new

D. Barac [1], Z. Karimadini [1], R. Croce [1], D. Iber [1]
[1] Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel, Switzerland

One of the major challenges in biology concerns the integration of data across length and time scales into a consistent framework: how do macroscopic properties and functionalities arise from the molecular regulatory networks ­ and how do they evolve? A deeper understanding of morphogenesis and organogenesis in particular is required to advance tissue engineering. Recent advancements in 3D ...

Modeling of Space-Charge Effects in 3D Thermionic Devices - new

P. Zilio [1], W. Raja [2], A. Alabastri [3], R. Proietti Zaccaria [2]
[1] Istituto Italiano di Tecnologia, Italy
[2] Istituto Italiano di Tecnologia, Italy
[3] Rice University, USA

The formation of space charge clouds is a well known problem that affects thermionic emitters in regimes of high current emission. Although some analytical models have been presented, suitable for 1D geometries, the modeling of the problem in complex 3D structures remains a challenge due to the mutual coupling between electron trajectories and field they produce. Here we propose a model able to ...

Simulating the Flow of Native Silk Feedstocks In Vivo - new

J. Sparkes [1],
[1] Natural Materials Group, Dept of Materials Science and Engineering, The University of Sheffield, Sheffield, UK

The ability to artificially produce silk fibers has great commercial, industrial and scientific implications. Much has been made of their remarkable mechanical properties but few have considered how they are imparted on the initially liquid silk feedstock.1 I am exploring how silk duct geometry affects the fibers produced as by understanding the flow conditions within the model, and comparing ...

Development of a RheoDSC, an Instrument for Simultaneous Rheological and Calorimetric Measurements - new

L. Van Lokeren [1], R. Verhelle [1], C. Block [1], P. Van Puyvelde [2], G. Van Assche [1]
[1] Vrije Universiteit Brussel, Brussels, Belgium
[2] Catholic University of Leuven, Leuven, Belgium

Transformations in polymers, such as polymerisation, melting/crystallization, and phase separation/remixing, are associated with changes in both rheological and thermal properties. To permit simultaneous calorimetric and rheometric measurements, the RheoDSC was developed. The RheoDSC combines two commercial instruments, a TA Instruments Q2000 DSC and a TA Instruments AR-G2 dynamic rheometer. A ...

Dried Reagent Resuspension for Point of Care Testing (Analysis at the Patient Bedside) - new

M. Huet [1],
[1] Department of Biotechnology, CEA/Université Grenoble-Alpes, Grenoble, France

A microfluidic component was designed to collect blood from a finger prick by capillary flow and to perform biological analysis. It was used to perform ABO blood typing experiments in one step, the blood drop deposit, by agglutination of red blood cells (RBC) using embedded dried reagents. The present study is a first step in the modeling of the whole agglutination assay. Blood typing ...

Simulation of the Earth's Electromagnetic Clearance System (DEMETER) - new

J. P. Pothin [1], N. Gosselin [1],
[1] Nexter Systems, France

DEMETER is a magnetic field replicator. This system is designed to deceive anti tank mines. Numerical simulation (using COMSOL Multiphysics® software) allows to indicate DEMETER's performance in various environment and various configurations. The study of the magnetic field provide also an overview of mine-clearing tools disturbances on the field generated by DEMETER.

1D Axisymmetric Modeling of Shrinkage for Non-Porous Materials - new

J. M. Meot [1], A. Briffaz [1], J. Jacquin [2], S. Rashidi [2]
[1] Cirad, UMR QualiSud, Montpellier, France
[2] Bureau national Interprofessionnel du Pruneau, Villeneuve, France

A 1D-axisymmetric model was built to represent the drying of a single d’Ente plum to d’Agen prune. Underlying assumptions of the model were those of Di Matteo et al. 2003. Sorption isotherms of plum come from Tsami et al, 1990 and equation structure of apparent water diffusion coefficients from Sabarez, 2001. External transfer coefficients were adjusted by direct measurements. The parameters of ...

COMSOL Multiphysics® Software for Modeling STW Devices - new

V. Plessky [1], V. Yantchev [2]
[1] GVR Trade SA, Gorgier, Swizterland
[2] Individual Consultant, Sofia, Bulgaria

Electroacoustic resonators employing surface acoustic waves (SAW) are commercially widely used in RF filters, low noise frequency sources as well as various sensors. In all of these applications the resonance quality factor appears to be a limiting performance factor. Quite often practical Q factors are not limited by the materials, but by design deficiencies, enabling energy loss outside the ...

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