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 2020

MEMS and Nanotechnologyx

MEMS-based Reconfigurable Energy harvesting Device Using the Couple Cantilevers

A. A.L.G.N.[1], E. Rufus[1]
[1]VIT, India

Energy Harvesting methods are the most important area of Research since last decade, to bring forward the alternative methods for conventional power sources and generators at microscale and low powered devices. Most of these techniques use the ambient energy present in the environment ... En savoir plus

Co-simulation Framework in COMSOL Multiphysics® for Displacement of a MEMS Cantilever using a Depletion Schottky Transducer

K. Dhope[1], S. Tallur[1]
[1]Indian Institute of Technology Bombay, India

Depletion layer MEMS actuators have been demonstrated in the past in p-n junctions as well as Schottky barrier interfaces to be effective transducers for internal transduction of high Q MEMS resonators without the need for piezoelectric materials or small resonator-electrode gaps. ... En savoir plus

In-Air Fault Detection for Medical Ultrasonic Transducers

C. Chung[1], P. Verma[2]
[1]Xi Engineering Consultants Ltd., United Kingdom
[2]Sheffield Teaching Hospitals NHS Foundation Trust, United Kingdom

Ultrasound transducers are regularly used in medical clinics but their performance is known to deteriorate over time. Causes of this image quality degradation can include delamination between layers, physical breakage of components, short circuits and weakening crystals. Regular ... En savoir plus

Multiphysics Modeling of Piezotronic Effect of ZnO Nanowires Under Arbitrary Loading

m. El Hachemi[1], J. Polesel[1]
[1]Luxembourg Institute of Science and Technology (LIST), Luxembourg

In order to exploit the piezotronic effect of Zinc Oxide (ZnO) crystal and to design an optimal high gauge strain sensors. One would require a deep understanding of the dynamics of charge carrier transport and accurately predict the levels of mechanical stress field and electrical charge ... En savoir plus

Studies of the Yield of Back-Scattered Electrons in Scanning Field Emission Microscopy

H. Cabrera Cifuentes[1], G. Bertolini[1]
[1]ETH Zurich, Switzerland

Scanning field emission microscopy (SFEM) is a technique based on Topografiner [1] and Scanning Tunneling Microscopy (STM) [2] technologies. In this work, we do SFEM experiments to measure the electrons emitted by a sharp tungsten tip once they are back-scattered by a W(110) surface with ... En savoir plus

Light Enhancement and Direction Control Using Bowtie Antenna Arrays

I. Pita[1], N. Liu[2], B. Corbett[3]
[1]Photonics Center, Tyndall National Institute, Ireland
[2]Department of Physics and Bernal Institute, University of Limerick, Ireland
[3]Photonics Center, Tyndall National Institute, Ireland

The focus of this work is to determine the potential for arrays of nanoscale bowtie antennas for light enhancement and direction control in nano-optics devices. This is achieved by studying the effects of illumination on the backscattered and total fields, along with the intensity of the ... En savoir plus

Simulation of Piezoelectric Device Structures for Force-Responsive Multi-Touch Displays

C. Tsangarides[1]
[1]Cambridge Touch Technologies Ltd, United Kingdom

Interacting with digital devices has become part of daily life, whether in consumer products, services, or industrial applications. Most display-based devices provide user interactivity through touch sensing via a touch panel. As the number of device features increases, it demands an ... En savoir plus

Hydrodynamic Heat Transport Model for Semiconductors with Complex Geometries Including Interfaces

A. Beardo Ricol[1], F. Alvarez Calafell[2]
[1]Universitat Autonoma de Barcelona (UAB), Spain
[2]Universitat Autonoma de Barcelona, Spain

The development of new experimental techniques designed to measure the thermal response of semiconductors at reduced length and time scales is revealing the requirement of generalized heat transport models beyond the classical Fourier law [1,2]. We present the Kinetic Collective ... En savoir plus

Towards High-Throughput DNA Synthesis in A Silicon-Based MEMS ‘Virtual Thermal Well’-Array

V. Narayan[1], A. Ferguson[1], Y. Lin[1], B. Kirkpatrick[1], M. Hayes[1], A. Prak[2]
[1]Evonetix Ltd, United Kingdom
[2]Lionix International, Netherlands

Evonetix is a Cambridge-based start-up company working on a revolutionary new technology to synthesize high-fidelity DNA at scale. Our technology is based on a silicon MEMS chip with a large number of reaction sites that facilitate multiple parallel synthesis channels. We operate a ... En savoir plus

Simulation of an AlN PMUT With A Crossed-Slit for Enhanced Acoustic Pressure Outputs in Liquids

V. Tzanov[1], E. Ledesma[1], F. Torres[1], N. Barniol[1]
[1]Universitat Autonoma de Barcelona, Spain

In our work, simulations of a piezoelectrical micromachined ultrasonic transducer compatible with CMOS-MEMS process are presented. The piezoelectric material of the PMUT is AlN sandwiched between two Al layers and a top Si3N4 passive layer. The piezoelectric and the metal materials have ... En savoir plus