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Multiphysics modeling and simulation drives innovation across industries and academia — as is evidenced by the many uses showcased in the technical papers and posters presented by engineers, researchers, and scientists at the COMSOL Conference each year.

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Single Discharge Simulations of Needle Pulses for Electrothermal Ablation

M. Hackert-Oschätzchen[1], M. Kreißig[1], M. Kowalick[1], H. Zeidler[1], A. Schubert[1], O. Kröning[2], M. Herzig[2], H.-P. Schulze[3]
[1]Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
[2]Leukhardt Schaltanlagen Systemtechnik GmbH, Magdeburg, Germany
[3] Otto-von-Guericke-Universität Magdeburg, Magdeburg, Germany

Within this study a model of a single discharge of micro scale EDM was developed in accordance with Schulze et al [1]. The specific computation of the growth of the plasma channel has been derived from this literature. Applying COMSOL Multiphysics® a pseudo 3-D geometry was created based ... Read More

Investigating the Influence of Dynamic Jet Shapes on the Jet Electrochemical Machining Process

M. Hackert[1], G. Meichsner[2], S.F. Jahn[1], and A. Schubert[1]
[1]Chemnitz University of Technology, Chair Micromanufacturing Technology, Germany
[2]Fraunhofer Institute for Machine Tools and Forming Technology Chemnitz, Germany

Electrochemical Machining is a potential procedure for micro manufacturing technology. Especially the absence of machining forces makes it advantageous for processing metals with high hardness and for the generation of complicated geometries. Applying a closed electrolytic free jet (Jet ... Read More

Pseudo-3D Multiphysics Simulation of a Hydride Vapor Phase Epitaxy Reactor

M. Hackert-Oschätzchen[1], M. Penzel[1], P. Plänitz[2], A. Schubert[1][3]
[1]Chemnitz University of Technology, Chemnitz, Germany
[2]GWT-TUD, Dresden, Germany
[3]Fraunhofer Institute for Machine Tools and Forming Technology IWU, Chemnitz, Germany

Gallium nitride (GaN) and its related nitride alloys with special physical properties are in technical areas of high interest. The growing of gallium nitride boules on non-native sapphire or silicon carbide requires complicated mechanisms of defect reduction in the lattice structure. ... Read More

Simulation of a Forming Process for Joining a Piezo Aluminium Module

M. Hackert, S.F. Jahn, and A. Schubert
Chemnitz University of Technology, Chair Micromanufacturing Technology, Germany

The fabrication of piezo aluminium composite modules for sensor and actor applications with mass production technologies is in the scope of the SFB/Transregio 39 PT-PIESA project funded by the (German Research Foundation). After forming of cavities with a width of 0.3 mm into aluminium ... Read More

Simulation of the Mechanical Stability of Inkjet-Printed Hierarchical Microsieves

S.F. Jahn[1,3], S. Ebert[2], M. Hackert[1], W.A. Goedel[2], R.R. Baumann[3], and A. Schubert[1,4]
[1]Chemnitz University of Technology, Chair Micromanufacturing Technology, Germany
[2]Chemnitz University of Technology, Physical Chemistry, Germany
[3]Chemnitz University of Technology, Professorship for Digital Printing and Imaging, Germany
[4]Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Porous membranes with pore sizes in the micrometer scale are required in many micro systems dedicated to biological and chemical applications. If their thickness is in the same dimension like the pore diameter they are called microsieves. On the one hand, a thin membrane guarantees a ... Read More

Simulation of a Modular Die Stamp for Micro Impact Extrusion

A. Schubert[1][2], R. Pohl[1], and M. Hackert[1]
[1]Chair Micromanufacturing Technology, Faculty of Mechanical Engineering, Chemnitz University of Technology, Chemnitz, Germany
[2]Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Micro impact extrusion is investigated at Chemnitz University of Technology as a potential procedure for large area machining of micro cavities within the scope of the SFB/Transregio 39 PT-PIESA of the German Research Foundation. Applying impact extrusion micro forming is done by ... Read More

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