技術情報とプレゼンテーション

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.

COMSOL Thermal Model for a Heated Neural Micro-Probe

M. Christian[1], S. Firebaugh[1], A. Smith[1]
[1]United States Naval Academy, Annapolis, MD, USA

This project utilizes the heat transfer module of the COMSOL Multiphysics environment to model the effects that an ohmic heating probe will have on neural tissue. The model quantifies the thermal impact of active components embedded on a neural micro probe by solving the Penne’s bioheat equation with an external MATLAB function to determine the heat generation along the length of the probe. ...

Simulation and Optimization of MEMS Piezoelectric Energy Harvester with a Non-traditional Geometry

S. Sunithamani[1], P. Lakshmi[1], E. E. Flora[1]
[1]Department of EEE, College of Engineering, Anna University, Chennai, India

Piezoelectric energy harvester converts mechanical vibrations into electrical energy via piezoelectric effect. The geometry of the piezoelectric cantilever beam greatly affects its vibration energy harvesting ability [1]. In this paper a MEMS based energy harvester with a non-traditional geometry is designed. The design of the energy harvester consists of a rectangular cantilever structure with ...

Implementation of ALE Moving Mesh for Transient Modeling of Nanowire Trajectories Caused by Electrokinetic Forces

S.M. Davison, and K.V. Sharp
Pennsylvania State University

Moving nanowires through microfluidic channels under electrokinetic forces can be a valuable technique to aid in the fabrication of certain devices. The trajectories of a nanowire under the influence of an externally applied electric field have been modelled through a straight channel, through a converging channel, and around a 90° corner. In a straight channel, a nanowire initially ...

COMSOL Multiphysics® Simulation Integrated into Genetic Optimization

V. Longinotti[1], S. Di Marco[1], S. Pistilli[1], F. Costa[1], M. Giusti[1], G. Gammariello[1], I. Gison[1], G. Latessa[1,2], D. Mascolo[2], A. Buosciolo[1]
[1]Altran Italia, Roma, Italy
[2]Consorzio DeltaTi Research, Milano, Italy

The main topic of this paper is the development of an innovative tool that can be applied in a wide range of complex problems, to simulate, optimize and improve system design especially when dealing with huge numbers of parameters and constraints. The new methodology is obtained by joining the power of COMSOL Muliphysics® simulation with the modern optimization approach of genetic algorithms. ...

Simulation of a One-Port SAW Resonator using COMSOL Multiphysics

R. Krishnan, H.B. Nemade, and R. Paily
Indian Institute of Technology, Guwahati

In this paper, we discuss simulation of one-port Surface Acoustic Wave (SAW) resonators using COMSOL Multiphysics. Resonator action can be achieved in one of the two ways; a single Inter-digital Transducer (IDT) having several fingers over a piezoelectric substrate or a short IDT with reflecting gratings at the ends of the IDT. We have modeled a Rayleigh wave type SAW device choosing YZ ...

Actively Controlled Ionic Current Gating In Nanopores

G. Zhang[1], S. Bearden[1]
[1]Clemson University, Clemson, SC, USA

It is necessary to understand and control nanopore behavior in order to develop biosensors for a variety of applications including DNA sequencing. The fluidics of nanopore devices we fabricated exhibits a range of interesting phenomena, such as enhanced conductance and current rectification. By electrically biasing nanopores, we were able to actively control the nanopore conductance in real time ...

Harmonic Simulation of Viscoelastic Polymer Microcantilever for Electrostrictive Energy Harvesters

N. Alcheikh[1], C. Ayela[1], I. Dufour[1]
[1]Univ. Bordeaux, IMS Lab, Pessac, France.

Electrostrictive polymers have been of significant interest over the last years for energy harvesting. Principle is based on the conversion of a mechanical deformation into electricity. The stored energy basically depends on the mechanical strain induced into an electrostrictive polymer by the mechanical resonant vibration of a microcantilever supporting the electrostrictive layer. In this work, ...

Sensitivity Optimization of Microfluidic Capacitance Sensors

S. Satti[1], M. Baghini[1]
[1]Indian Institute of Technology Bombay, Mumbai, Maharashtra, India

As a part of a lab-on-chip-device, more often it is required to measure dielectric constant of the fluid. For this purpose it is necessary to develop a sensor whose size is compatible with microfluidic channel. The work, presented in this paper, studies effect of the parameters influencing sensitivity of such a sensor and ultimately optimizes these dimensions to maximize the sensitivity. We ...

Design and Simulation of a Nano-Wire Based Piezoresistive Pressure Sensor

S. A. Selvin, N. B. Moorthy, G. Anju, and M. Alagappan
PSG College of Technology
Coimbatore
Tamil Nadu, India

This paper chalks out the design and performance of a piezo resistive surface micro machined circular diaphragm based pressure sensor. A structural deformation in the piezo resistive nano structure placed above the diaphragm will result in varied current density, which is in direct accordance with the applied pressure. This effect relies on the principle of piezo resistivity and employing a nano ...

Mathematical modeling of nanomaterials

Strauss, D.J., Trenado, C.
Institute of New Materials, Saarbrücken

Mathematical modeling at the Institute of New Materials has played a crucial role in supporting the manufacturing and design of new technologies of nanomaterials, whose applications range from transportation, electronics and optics engineering to environmental sciences. In this paper, we focus our attention to two mathematical models together with their corresponding FEMLAB simulations: The ...

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