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"plasma"

Numerical Modelling of a Free-Burning Arc in Argon. A Tool for Understanding the Optical Mirage Effect in a TIG Welding Device

J-M. Bauchire[1], E. Langlois-Bertrand[1], and C. de Izarra[1]
[1]GREMI, CNRS, Université d’Orléans, Orléans, France

In this paper, we present the numerical modelling of a free-burning arc and its application to the understanding of optical mirage effect which could occur in a TIG (Tungsten Inert Gas) device used in welding applications. Mehr lesen

Model of Microwave-Assisted Thermal Adhesion of Synthetic Leather to a Plastic Substrate

S. Soldatov [1], J. Meiser [2], B. Lepers [1], G. Link [1], J. Jelonnek [3],
[1] Karlsruhe Institute of Technology (KIT, IHM), Karlsruhe, Germany
[2] Carl Meiser GmbH & Co. KG, Albstadt, Germany
[3] Karlsruhe Institute of Technology (KIT, IHM, IHE), Karlsruhe, Germany

The lamination of substrates with thin coatings is commonly used in furniture, automotive and avionic industries. In the lamination process the hot melt adhesives are widely used and typically activated at temperatures from 80°C to 140°C by resistive heating. This requires a heat ... Mehr lesen

Adaptive Numerical Simulation of Streamer Propagation in Atmospheric Air

S. Singh[1], Y. Sedyuk[1], R. Summer[2]
[1]Chalmers University of Technology, High Voltage Engineering, Gothenburg, Sweden
[2]Schneider Electric, Regensburg, Germany

Simulations of streamer discharge was performed by utilizing a space adaptive numerical scheme based on logarithmic representation of mass conservation equations, which governs the transport of charge carriers. Implementation of a model, which describes the propagation of a streamer in ... Mehr lesen

Design Geometry Optimization of Vertical Cracks in Thermal Barrier Coatings from Simulated Thermal and Mechanical Behavior

C. Heveran[1], J. Xu[1], D. Cole[2], S. Basu[1], V. Sarin[1]
[1]Division of Materials Science and Engineering, Boston University, Brookline, MA, USA
[2]Department of Mechanical Engineering, Boston University, Brookline, MA, USA

Turbine blades are coated with thermal barrier coatings (TBCs) to reduce operating temperature. TBCs experience stress from coefficient of thermal expansion mismatch with the bond-coat and substrate. Vertical cracks are thought to offer stress relief, but influence of crack geometry on ... Mehr lesen

Development of a Single Cell Trapping Microfluidic Device

L. Weng [1], F. Ellett [1], J. F. Edd [1], M. Toner [1,2],
[1] Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
[2] Shriners Hospital for Children, Boston, MA, USA

Array-based technologies are important for many applications in drug discovery, microbiology and cell biology. A large-scale array of single cells allows high-throughput monitoring of behaviors of individual cells in parallel, avoiding the lack of cell specificity inherent to bulk ... Mehr lesen

Heat Transfer and Phase Transformation on Matrix Assisted Pulsed Laser Evaporation (MAPLE) of Biocompatible Thin Layers

E. Lacatus[1], G.C. Alecu[1], M.A. Sopronyi[2], A. Tudor[1]
[1]POLITEHNICA University of Bucharest, Bucharest, Romania
[2]INFLPR -National Institute for Laser Plasma and Radiation Physics, Bucharest, Romania

Matrix Assisted Pulsed Laser Evaporation (MAPLE) technique is used for the deposition of high quality biocompatible polymer thin films. During the deposition process the temperature of the laser target should be kept below 193K to assure the proper quality of both evaporation and ... Mehr lesen

Thermal Model for Single Discharge EDM Process Using COMSOL Multiphysics

K. Gajjar[1], U. Maradia[2], K. Wegener[2]
[1]Indian Institute of Technology Bombay, Mumbai, Maharshtra, India
[2]Institute for Process Tools and Manufacturing (IWF), Zurich, Switzerland

Electrical Discharge Machining (EDM) is a non-conventional process used for machining electrically conducting materials. In die sink-EDM, sparks are generated between tool and workpiece resulting in heating of both electrode surfaces and creating a melt pool of metal which leads to ... Mehr lesen

Enhancing Fluorescence of Diamond Color Centers near Gold Nanorods via Geometry Optimization

M. Csete [1], A. Szenes [1], L. Zs. Szabó [1], G. Szabó [1], T. Csendes [2], B. Bánhelyi [2],
[1] Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary
[2] Institute of Informatics, University of Szeged, Szeged, Hungary

Detecting light emitted by fluorescent molecules with resolution down to single photon is an important problem in various fields of sciences and applications, such as solid-state physics, quantum information processing and medicine. The detection probability can be improved via ... Mehr lesen

Influence of Electrode Kinetics on Lithium-ion Battery Characteristics

H. Machrafi[1,2], S. Cavadias[2]
[1]University of Liège, Thermodynamics of Irreversible Phenomena, Liège, Belgium
[2]University Pierre et Marie Curie, Laboratoire des Procédés Plasma et Traitement de Surface, Paris, France

The purpose of this work is to show whether an important difference in Lithium solid concentration and electrolyte concentration can be observed in a Lithium-ion battery model, when considering either the Butler-Volmer kinetics or the Tafel kinetics for describing the electrode kinetics ... Mehr lesen

Innovation of Combustion Particle Control Technologies Assisted by Numerical Modeling

D. Rubinetti [1],
[1] Institute of Biomass and Resource Efficiency, University of Applied Sciences and Arts Northwestern Switzerland, Windisch, Switzerland

Worldwide efforts to promote the use of renewable energies include combustion-based technologies that produce substantial amounts of pollutants. In order to control the environmental impact a proper treatment of exhaust gases is required. This study describes the development of a ... Mehr lesen

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