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Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Consultez les proceedings de la Conference COMSOL 2024

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Finite Element Simulation of Love Wave based SAW Delay Line Using COMSOL Multiphysics

S. Trivedi [1], H. B. Nemade [2],
[1] Center for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, India
[2] Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

The paper presents 3D finite element simulation of Love wave based SAW delay line using COMSOL Multiphysics software. The device consists of a 36° YX Lithium Tantalate substrate covered with 4.7 μm thick SiO2 waveguide layer operating at λ = 12 μm. Time response study is used to ... En savoir plus

FEM Simulation of Generation of Bulk Acoustic Waves and their Effects in SAW Devices

A.K. Namdeo[1], N. Ramakrishnan[2], and H.B. Nemade[1]
[1]Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, Guwahati, India
[2]Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, India

This paper presents finite element method (FEM) simulation study of the generation of bulk acoustic waves (BAWs) and their effect on the performance of surface acoustic wave (SAW) devices, using COMSOL Multiphysics. A SAW delay line structure using YZ-cut lithium niobate substrate is ... En savoir plus

Extraction of COM Parameters and Quality Factor of One Port SAW Resonator Using FEM Based Simulation

A. K. Namdeo[1], H. B. Nemade[1]
[1]Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati, Assam, India

The paper presents a method of extraction of coupling of modes (COM) parameters for a one port surface acoustic wave (SAW) resonator from the results of finite element analysis in COMSOL Multiphysics®. The COM parameters calculated are electromechanical coupling coefficient, reflection ... En savoir plus

Surface Acoustic Wave Properties (SAW) and Acoustic Streaming Characterization for Annular and Curved Electrodes on 128˚ Y-Cut, X-Propagating LiNbO3

G. Potter[1], N. Tokranova[1], S. Gattu[1], J. Castracane[1]
[1]SUNY College of Nanoscale Science and Engineering, Albany, NY, USA

Microfluidic devices and lab-on-a-chip (LOC) require the ability to transport or pump reagents or reaction products, the ability to effectively mix small volumes of fluid, and provide direct data display. Surface acoustic wave (SAW) driven acoustic streaming generated by a piezoelectric ... En savoir plus

FEM Study on Contactless Excitation of Acoustic Waves in SAWDevices

A. K. Namdeo[1], N. Ramakrishna[2], H. B. Nemade[1,2], and R. P. Palathinkal[1]

[1] Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, Assam, India
[2] Centre for Nanotechnology. Indian Institute of Technology Guwahati, Assam, India

In this paper a finite element method(FEM) study of a surface acoustic wave (SAW)device excited by electrostatic coupling method is performed by using COMSOL Multiphysics. We have modeled a Rayleigh wave type SAW device by choosing YZ Lithium niobate as the substrate. The effect of ... En savoir plus

The FEM simulation of the Surface Acoustic Wave Delay Line based on the P-matrix model for Sensor Application

B. Panchal[1]
[1]NIT Calicut, Kerala, India

Since the last few decades, the researchers are focused on new sensor material and novel design structure with high performances. Today various technologies are available but SAW sensors are preferable because of its characteristics such as low cost, low power, lightweight, rugged, ... En savoir plus

ZnO/金刚石结构单端谐振器电极反射研究

钱进 [1], 马俊 [1],
[1] 天津理工大学

近年来，随着智能手机的普及和移动通讯技术的不断升级，对高频高性能SAW器件的需求也出现了激增之势。由于具有高的声速，包含金刚石的多层膜结构SAW器件成为了人们研究的热点。多层膜结构除了要具有高的相速度和大的机电耦合系数外，还需要IDT具有大的反射系数来设计低损耗和小尺寸的SAW器件，而电极厚度是影响反射系数的重要因素。本文利用COMSOL中的压电设备模块研究了ZnO/金刚石结构中Rayleigh波的m1和m2模式在最大机电耦合系数处的电极效应。仿真了ZnO/金刚石结构单端谐振器声表面波器件，计算了不同电极厚度下SAW的相速度、机电耦合系数和反射系数 ... En savoir plus

Thermoviscous Acoustics – Piezoelectric Modeling and Simulation of Surface Acoustic Wave Devices

V. M. Dhagat [1], P. Dufilie [2],
[1] University of Connecticut, Mansfield, CT, USA
[2] Phonon Corporation, Simsbury, CT, USA

New drug discovery and development is costly; of all compounds investigated for use in humans, only a small fraction is approved for treatments around the world. The pharmaceutical industry has started switching from molecular drugs to protein-based drugs due to high specificity, ... En savoir plus

Comparative Numerical Simulation of Masonry arch with Different Interlocking Pattern

K. Mishra[1], H. Gupta[2], D. Ghosh[3], A. Mittal[3]
[1]CSIR -Central Building Research Institute, India
[2]CSIR-Central Building Research Institute, India
[3]CSIR - Central Building Research Institute, India

Arches being one of the most aesthetic and stable form of structural elements, have been constantly used since hundreds of years in various form of constructions be it buildings, bridges or any other structural system. Though, common use of reinforced concrete framed structures has ... En savoir plus

Finite Element Simulation of a Surface Acoustic Wave Driven Linear Motor

B. Behera [1], H. B. Nemade [1], S. Trivedi [1],
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India

The paper presents finite element simulation of a surface acoustic wave (SAW) linear motor. The function of SAW linear motor depends on the principle of friction drive provided by SAW propagating on a piezoelectric substrate. The SAW motor comprises of a slider driven by Rayleigh wave ... En savoir plus

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