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.
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Optimization of Active Packaging for Microwaveable Food Products Using COMSOL Multiphysics® - new

S. Landa[1], A. Bardenstein[1]
[1]Danish Technological Institute, Taastrup, Denmark

Upon operation, the magnetron of a conventional microwave oven induces a pattern of standing electromagnetic waves in the oven cavity. Interactions with the field define the amount of energy absorbed in a part of a food object within the cavity. The well-known inhomogeneous heating produced in a microwave oven is partially an effect of the standing waves’ natural nodes and antinodes and ...

Cancer Detection Using Coagulation Therapy with Coaxial Antenna - new

S. M. Ali[1], A. K. Jha[1], S. Mahapatra[1], M. Panigrahi[1]
[1]Trident Academy of Technology, Bhubaneswar, Odisha, India

Nearly seven lakh Indians die of cancer, while over 10 lakh are newly diagnosed with some form of the disease every year. Surgical resection is not always feasible in patients with hepatocellular carcinoma. Microwave Coagulation Therapy (MCT) has been used as an alternative to resection and its efficiency has been evaluated in tissue microwave irradiation from a dipole antenna causes water ...

The Simulation of Motion of a Slider upon a Stator Due to Frictional Force Using COMSOL Multiphysics® Software - new

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

The Surface Acoustic Wave (SAW) linear motor was studied which is developed utilizing the friction principle for driving. The principle says that, when a slider is placed on the Rayleigh waves generated on a stator, the slider moves in reverse direction of the wave due to friction between the stator and the slider. A LiNbO3 piezoelectric substrate is used as a stator where comb structured Al ...

Prospects of Multiphysics Simulations to Steer the Development of High Brightness LED Technologies

T. Lopez [1], O. Shchekin [1],
[1] Lumileds, Eindhoven, Netherlands

The versatility of COMSOL Multiphysics® software has positioned it at competitive levels against other considered industrial-standard engineering software tools. This contribution is directed towards emphasizing the need of further developing the basic concepts of this versatile tool in order to enable the implementation of complex physics modeling techniques in rapid, flexible and customized ...

基于等效热模型的三维封装快速热仿真技术

唐旻 [1], 冯强强 [1], 董一琳 [1]
[1] 上海交通大学,上海,中国

近年来,三维系统级封装技术逐渐成为人们的关注焦点,是下一代集成电路封装设计最有发展潜力的实现方案。然而,热管理是系统级封装技术需解决的关键问题。图1是典型的系统级封装结构,包含堆叠芯片、硅通孔、封装基板、热界面材料以及多层凸点结构。若对该结构的所有细节进行建模,将会消耗巨大的计算资源,导致分析效率非常低下。因此,本论文将封装中的硅通孔层以及凸点层等复杂结构进行等效处理,提取它们在水平和垂直方向上的等效热导率以及等效比热容、等效密度等参数。例如,在建模过程中,采用 COMSOL Multiphysics® 传热模块对硅通孔层的水平方向等效热导率进行提取,边界设置如图2所示,通过仿真得到的热源端温度来推导等效热导率。类似地,垂直方向的等效热导率提取如图3所示。经过上述处理,可将封装中的硅通孔层以及凸点层等复杂结构等效为介质均匀的材料,然后再采用 COMSOL 进行整体封装结构的热仿真 ...

FEM-Simulation of a Printed Acceleration Sensor with RF Readout Circuit

H. Schweiger[1], T. Göstenkors[1], R. Bau[1], D. Zielke[1]
[1]Dept. Engineering Sciences and Mathematics, University of Applied Sciences Bielefeld, Bielefeld, Germany

In this paper we want to figure out the development of a capacitive acceleration-sensor system with the FEM-Method. The sensor-system is in the position to detect accelerations in the range of ±20 g. Furthermore the sensor-element contains a printed RF-inductance, which is used for contactless data transfer. On the one hand the simulation of the L-C-oscillating circuit using the RF Module of ...

Terahertz Resonant Dipole Nanoantennas

S. Tuccio [1], A. Alabastri[1], L. Razzari[1], A. Toma[1], C. Liberale[1], R. Proietti Zaccaria[1], F. De Angelis[1], G. Das[1], E. di Fabrizio[1]
[1]Istituto Italiano di Tecnologia, Genova, Italy

Nanoantennas have been successfully employed in a wide set of applications. We show the possibility to expand usual nanoantenna functionalities in the THz domain with a gold dipole nanoantenna. We considered an array of aligned planar gold nanoantennas over a silicon substrate. The high near field enhancement, localized at the device ends, indicates potential uses for THz spectroscopy and ...

Analysis of Super Imaging Properties of Spherical Geodesic Waveguide Using COMSOL Multiphysics

D. Grabovi?ki?[1], J.C. González[1], P. Benítez[1], J.C. Miñano[1]
[1]Cedint Universidad Politécnica de Madrid, Madrid, Spain

Negative Refractive Lens (NRL) has shown that an optical system can produce images with details below the classic Abbe diffraction limit. This optical system transmits the electromagnetic fields, emitted by an object plane, towards an image plane producing the same field distribution in both planes. Recently, two devices with positive refraction, the Maxwell Fish Eye lens (MFE) (Leonhardt et al. ...

Optimization of Mechanical Properties of Superconducting Cavities for Project X LINAC

I. Gonin[1], M. Awida[1], T. Khabiboulline[1], V. Yakovlev[1]
[1]Fermilab, Batavia, IL, USA

Project X is a proposed proton accelerator complex at Fermilab. The CW LINAC is based on five types of resonators operating at three frequencies: half-wave, spoke, and elliptical. The low beam current for the CW operation of Project X requires cavities to operate at a high loaded Q and, thus, narrow bandwidth. Therefore, it requires optimal mechanical design of the cavities to minimize the ...

Analysis of a Planar Inverted-F Mobile Handset Antenna with Reduced Radiation Towards the Human Head

C. Anandan[1]
[1]Cochin University of Science and Technology, Cochin, Kerala, India

This paper deals with the simulation and analysis of SAR and temperature distribution induced by a Planar Inverted-F Antenna on human head model using COMSOL Multiphysics® software. The goal of this paper is to compare the SAR and temperature distributions of omni-directional PIFA with that of a PIFA with reduced radiation towards human head. The two antennas are designed to operate at 900 MHz ...