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.

A FEM Study of Displacement Sensor Based on Magnetostrictive/Piezoelectric Composite Material

Qingwei Liu [1], Hangjie Mo [1]
[1] Shanghai Jiao Tong University, Shanghai, China

This paper studies the application of laminate magnetoelectric (ME) material in displacement sensor. We studied the L-L block composite thanks to designed structure by coupling displacement signal with the displacement potential of ME composite. A nonlinear approximation is adapted to modeling magnetostrictive phase and implemented in COMSOL Multiphysics® software. The simulation results ...

Phasefield Modeling of Ferroelectric Materials

Marc Kamlah
Head of the Mechanics of Materials Department, Forschungszentrum Karlsruhe, Germany

Outline of presentation: theory of phase-field modeling of ferroelectric materials parameter identification in free energy density finite element implementation: PDE form weak form periodic boundary conditions: electrical mechanical domain configurations intrinsic and extrinsic contributions to small signal properties ---------------------------------- Keynote speaker's biography ...

Powerful automation and optimization methods for Material- and Process analysis with COMSOL Multiphysics and Matlab

T. Frommelt
SGL Group, Technology & Innovation, Meitingen, Germany

Thomas Frommelt received his PhD in physics in 2007 from the University of Augsburg for experimental work and simulation analysis on acoustically driven microfluidic mixing. In 2008, he joined the SGL Group and introduced COMSOL Multiphysics as the tool for flexible equation based modelling. Since then, he has focused on carbon material and process simulation employing methods of optimization ...

Analysis of Fluid Pumping with a Throttle Type Piezoelectric Micro Pump

B. Pe?ar[1], D. Križaj[1], D. Vrta?nik[1], D. Resnik[1], U. Aljan?i?[1], M. Možek[1], T. Dolžan[1], A. Slavko[1]
[1]Faculty of Electrical Engineering, UNI of Ljubljana, Ljubljana, Slovenia

Operation of a modified type microthrottle (MT) pump is analyzed by numerical simulation. Conventional MT pumps have disk type piezoelectric membranes while the analyzed type has a membrane of a rectangular shape. This could be advantageous in case the pump is stacked into an array for parallel pumping. A complete electro–fluid–solid mechanics coupling model for numerical simulation of strip ...

Multiphysics FEM Simulations Approach for Development of a MEMS Heat Generator

G. S. Masi[1], S. V. De Guido[1], G. Montagna[2], C. Martucci[2], P. M. Congedo[1], L. Vasanelli [1], M. G. Manera[2], R. Rella[2]
[1]Department of Innovation Engineering, University of Salento, Lecce, Italy
[2]CNR-IMM, Lecce, Italy

Introduction: Accurate fluid temperature control in microfluidic channels is a requirement for many lab-on-chip and micro-reactors.Thin films resistive metal heaters have proven to be the best choice for localizing heating applications with integrated microfluidic systems. A thin platinum layer has been chosen as the metal used to realize the meander because of its positive and linear ...

Design and Simulation of MEMS Based Gyroscope for Vestibular Prosthesis

R. Nithya[1], K. Kavitha[1], R. K. Shahana[1], A. Gupta[1], M. Alagappan[1]
[1]Department of Biomedical Engineering, PSG College of Technology, Coimbatore, Tamilnadu, India

The primary function of the vestibular system is to provide the brain with information about the body\'s motion and orientation. The absence of this information causes blurred vision and spatial disorientation, vertigo, dizziness, imbalance, nausea, vomiting, and other symptoms often characterize dysfunction of the vestibular system. Our aim is to design vestibular prosthesis using COMSOL ...

Finite Element Evaluation of Surface Acoustic Wave Reflection and Scattering from Topographic Irregularities Comparable with the Wavelength

S. Yankin[1,2], S. Suchkov[2], S. Nikitov[2,3], B. Sveshnikov[2], I. Shatrova [2]
[1]Joint International Laboratory LICS/LEMAC, IEMN UMR CNRS 8520, EC Lille,Villeneuve d’Ascq, France
[2]Saratov State University, Saratov, Russia
[3]Institute of Radio-engineering and Electronics, Russian academy of Science, Moscow, Russia

Design of SAW devices needs the accurate study of the scattering fields, arising from the interaction of SAW with topographic irregularities. To solve this problem FE methods very perspective, because with its help one can take into account the actual geometry of the electrodes and reflectors. This work describes results of original time domain calculation of 2D SAW scattering fields in delay ...

Simulation of a Thermoelectric Spiral Structure

A. Arevalo [1], J. P. Rojas [1], D. Conchouso [1], M. M. Hussain [1], I. G. Foulds [2]
[1] Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
[2] The University of British Columbia, School of Engineering, Okanagan Campus, Canada

Energy efficiency and harvest, speed and performance, flexibility and portability are key elements for innovation in the current consumer electronics markets. Thermoelectric Generators can convert energy from heat gradients into electricity. Every source of heat from an electronics device can potentially be used as a source of energy. This generators have the advantage of: being silent, compact, ...

Modelling of Micro/Macro Densification Phenomena of Cu Powder during Capacitor Discharge Sintering

G. Maizza[1] and A. Tassinari[1]

[1]Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Torino, Italy

Capacitor Discharge Sintering (CDS) is an ultrafast Electric Current Assisted Sintering method (u-ECAS) suited for electrically conductive powders. It is characterized by relatively short processing times (milliseconds range) and much lower sintering temperatures than the melting point of the powders. However, the CDS basic phenomena are not fully understood yet neither at the macroscale nor at ...

Computational Simulation of Electrohydrodynamic Systems Pertaining to Micro and Nano scale Fluid Flow Phenomenon

M. Seiler[1], and B. Kirby[2]
[1]Department of Engineering Physics, Cornell
University, NY, USA
[2]Department of Mechanical Engineering, Cornell
University, NY, USA

Modeling of 3D AC electro-osmotic pumps is relevant to the creation of portable or implantable lab-on-a-chip devices for mm/s tunable fluid flows attainable with battery scale voltages. In this analysis using COMSOL Multiphysics we investigate the modeling challenges of computationally calculating systems of fluid flow phenomena governed by AC Electroosmosis in the micro and nano scale regimes.