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In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Visualizza gli articoli presentati alla COMSOL Conference 2020

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Simulation of a Magnetophoretic Device for the Separation of Colloidal Particles in Magnetic Fluids

S.K. Fateen, and M. Magdi
Cairo University, Giza, Egypt

Magnetophoresis of non-magnetic particles is the induced motion of non-magnetic particles suspended in magnetic media on the application of a magnetic field gradient. Magnetophoresis can be used in special separation devices to separate colloidal particles based on their sizes. ... Per saperne di più

Conducting Finite Element Convergence Studies Using COMSOL 4.0

M.K. Gobbert, and D.W. Trott
University of Maryland, Baltimore, MD, USA

We will show how to carry out convergence studies of the FEM error on a sequence of progressively finer meshes in COMSOL Multiphysics on the example of Lagrange elements of varying polynomial degrees, which will also bring out the benefit of using higher order elements. The sample ... Per saperne di più

Super-resolving Properties of Metallodielectric Stacks

N. Katte[1], J. Haus[1], J.B. Serushema[1], and M. Scalora[2]
[1]University of Dayton, Dayton, OH, USA
[2]Charles M. Bowden Research Center, Redstone Arsenal, AL, USA

We show that diffraction can be suppressed in a one-dimensional metallodielectric stack (MDS) at visible wavelengths to achieve super-resolution imaging. In our calculations we use two popular techniques, which can be adapted to investigate the imaging properties of MDSs. The two methods ... Per saperne di più

Numerical Simulation of a Joule Heating Problem

S.M.F. Garcia[1], and P. Seshaiyer[2]
[1]U.S. Naval Academy, Annapolis, MD, USA
[2]George Mason University, Fairfax, VA, USA

In this work we consider a 1-D mathematical model that describes a heating problem combined with electrical current flows in a body which may undergo a phase change as a result of the heat generated by the current, so-called Joule heating. The model consists of a system of nonlinear ... Per saperne di più

Modeling Microfluidic Separations Using COMSOL Multiphysics

B.A. Finlayson[1], and R.A. Shaw[2]
[1]University of Washington, Seattle, WA, USA
[2]National Research Council of Canada, Winnipeg, MB, Canada

Infrared spectroscopy can be used to identify chemicals in a stream provided the signal is strong enough. A microfluidic device is modeled here with the objective of separating serum components so as to enhance the metabolite/protein concentration ratio. Serum contains creatinine (a ... Per saperne di più

Implementation of the Perfectly Matched Layer to Determine the Quality Factor of Axisymmetric Resonators in COMSOL

M.I. Cheema, and A.G. Kirk
McGill University, Montreal, QC, Canada

Due to the inseparability of the wave equation, numerical methods are needed to develop an accurate electromagnetic model for various axisymmetric resonators such as micro-discs and micro-toroids. Our purpose is the implementation of a perfectly matched layer to determine the quality ... Per saperne di più

Analysis of Multiconductor Quasi-TEM Transmission Lines and Multimode Waveguides

S.M. Musa[1], M.N.O. Sadiku[1], and O.D. Momoh[2]
[1]Prairie View A&M University, Prairie View, TX, USA
[2]Indiana University-Purdue University, Fort Wayne, IN, USA

This paper presents an analysis approach of multicondcutor quasi-TEM lines transmission interconnect in a single dielectric region and multimode waveguides using the finite element method (FEM). FEM is especially suitable and effective for the computation of electromagnetic fields in ... Per saperne di più

Finite Element Analysis of Multilayer Transmission Lines for High-Speed Digital Interconnects

S.M. Musa, and M.N.O. Sadiku
Prairie View A&M University, Prairie View, TX, USA

In this paper, we consider the finite element modeling of multilayer transmission lines for high-speed digital interconnects. Using COMSOL we mainly focused on the modeling of the transmission structures with both cases of symmetric and asymmetric geometries. We specifically designed ... Per saperne di più

COMSOL Based Multiphysics Analysis Of Surface Roughness Effects On Capacitance In RF MEMS Varactors

D. Mondal[1], R. Mukherjee[2], D. Mukherjee[1], and C. RoyChaudhuri[1]
[1]Department of Electronics and Telecommunication Engineering, Bengal Engineering and Science University Shibpur, Howrah, West Bengal, India
[2]School of VLSI Technology, Bengal Engineering and Science University Shibpur, Howrah, West Bengal, India

In this paper, the effects of roughness in the surfaces of the plates caused due to nonuniform etching during their release and/or due to defects in the original wafer on the capacitance in RF-MEMS parallel plate varactors are analyzed. Capacitance extraction due to surface roughness has ... Per saperne di più

Modeling PIN Photodiodes

R.W. Pryor
Pryor Knowledge Systems Inc., Bloomfield Hills, MI, USA

This paper presents one approach to the modeling of an abrupt junction PIN photodiode light sensor using COMSOL Multiphysics software and the incorporated SPICE® capability. The current model is built using the capabilities of SPICE in COMSOL Multiphysics 4.0. This model demonstrates the ... Per saperne di più

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