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.

Two-Dimensional Simulation of All-Solid-State Lithium-ion Batteries

L. Tong [1],
[1] Keisoku Engineering System Co., Ltd., Chiyoda-ku, Tokyo, Japan

There is great interest in developing all-solid-state lithium-ion batteries. They are ideal micro-power sources for many applications in portable electronic devices, electric vehicles and biomedical engineering. It is known that all-solid-state lithium-ion batteries are often fabricated by thin film methods, with thicknesses in the range of a few micrometers. Since porous electrodes are not ...

Primary Current Distribution Model for Electrochemical Etching of Silicon through a Circular Opening

A. Ivanov [1], U. Mescheder [1],
[1] Hochschule Furtwangen University, Furtwangen im Schwarzwald, Germany

Primary current distribution model for anodization of low-doped p-type silicon through a circular opening in frontside insulating mask is developed. The model is applied in two regimes of the process – pore formation and electropolishing – by definition of current density dependent functions of porosity and dissolution valence based on experimental results. As found also experimentally, ...

Simplified Multiphysics Model for All-Solid State Microbatteries

M.S. Nesro[1], I.M. Elfadel[1]
[1]Masdar Institute of Science and Technology, Masdar City, Abu Dhabi, UAE

Lithium microbatteries are replacing conventional power sources in many microsystems areas such as wireless sensors and biomedical monitors. In many of these applications, compact models of micro batteries are needed both at the microsystems design stage and at the real-time power management stage. These compact models are typically derived from physics-based discretized formulations. We have ...

The Effect of Electrolyte Flow Slots in Tooling Electrodes on Workpiece Surface Finish in Electrochemical Machining

B. Bingham[1]
[1]Oregon State University, Corvallis, OR, USA

Electrochemical machining (ECM) uses electrolysis to precisely remove material at high rates. ECM has many advantages over conventional machining: no tool wear, no induced mechanical or thermal stresses, high removal rates virtually independent of material hardness or strength, and excellent surface finishes. However, challenges can arise during the design of the tooling electrode when ...

Transient Simulation of an Electrochemical Machining Process for Stamping and Extrusion Dies

M. Penzel [1], M. Hackert-Oschätzchen [2], M. Kreißig [1], M. Kowalick [1], M. Zinecker [1], A. Schubert [1], G. Meichsner [3],
[1] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
[2] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
[3] Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Precise electrochemical machining (PEM) is a non-conventional machining technology, based on anodic dissolution of metallic work-pieces. In this study an additional extension of the precise electrochemical machining with a precise angle-controlled cylinder positioning is aimed. Due to the help of the angle-controlled cylinder positioning, with PEM e.g. stamping and extrusion dies can be ...

COMSOL Multiphysics® Based Identification of Thermal Properties of Mesoporous Silicon by Pulsed Photothermal Method - new

N. Semmar[1], I. El Abdouni[1], A. Melhem[1]
[1]GREMI-UMR7344, CNRS/University of Orléans, Orléans, France

The silicon is mainly known under its single-crystal shape and polycrystalline. Since a few decades, a new type of morphology is developed: the porous silicon (p-Si). Meso-porous silicon (Mp-Si) is one of promising materials for future microelectronic chips multi-functionalization systems, and for micro-sensing devices. For thermal properties investigation many experimental systems were ...

A Single Particle Thermal Model for Lithium Ion Batteries - new

R. Painter[1], S. Berryhill[1], L. Sharpe[2], S. K. Hargrove[2]
[1]Department of Civil Engineering, Tennessee State University, Nashville, TN, USA
[2]Department of Mechanical Engineering, Tennessee State University, Nashville, TN, USA

COMSOL® "Single Particle Model for Lithium-Ion Batteries” (Model ID: 14527) is generalized to include an energy balance. This is accomplished by approximating the solution phase polarization as a function of current and temperature. The theoretical approach for this work is similar to Guo et al. [Journal of the Electrochemical Society, 158, (2) A122-A132 (2011)] for modeling lithium ion cells. ...

Copper Electroplating Parameters Optimization

L. M. A. Ferreira [1],
[1] CERN , Geneva, Switzerland

Aqueous based copper electroplating seems the most reliable, flexible, cost effective method to create a copper layer on stainless steel coupler devices; this however, doesn’t imply a straightforward application, as subcomponents geometry is complex and tolerances are tight. At CERN, two existing copper electroplating baths were tested to evaluate the feasibility of plating three couplers ...

Cooling and Hardening during Injection Molding of Field Joint Coatings for Deep Sea Pipelines

L. Van Lokeren [1], R. Verhelle [1], S. Loulidi [1], H. Boyd [2], G. Ridolfi [2], G. Van Assche [1]
[1] Vrije Universiteit Brussel, Brussels, Belgium
[2] Heerema Marine Contractors, Leiden, The Netherlands

A multilayer polymer coating is applied to carbon steel pipelines installed in the sea to protect against corrosion and to insulate to maintain the temperature. For field joint coatings, both thermosets (like polyurethane) and semi-crystalline thermoplastics (like polypropylene) are commonly used. To predict the temperature and crystallinity or conversion of the polymer during the cooling ...

Analysis of an Electrochemical Machining Process for Particle Reinforced Aluminum-Matrix Composites

M. Hackert-Oschätzchen [1], N. Lehnert [1], C. Scherf [2], A. Martin [1], M. Penzel [1], A. Schubert [3],
[1] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
[2] Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
[3] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

At the Technische Universität Chemnitz several academic institutions work on aluminum matrix composites (AMCs) within the Collaborative Research Centre SFB 692 HALS. Besides the development and analysis of these materials one main task is finishing machining of AMCs by an electrochemical machining (ECM) process. One possible method of ECM is electrochemical machining with continuous electrolytic ...