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.

Electromagnetic(EM) and Thermal Characterization of a Microwave Oven in COMSOL Multiphysics® Software

S. Fujii [1], E. Suzuki [2],
[1] National Institute of Technology, Okinawa College, Nago, Okinawa, Japan
[2] Tokyo Institute of Technology, Meguro, Tokyo, Japan

Chemical reactions performed under microwave irradiation often have high reaction rates and high selectivities, which enable reactor sizes to be compact and processes to be energy-conserving. A microwave oven is widely used for microwave chemical processing and chemical synthesis. The COMSOL Multiphysics® software was used to obtain the the distribution of the electromagnetic (EM) field in the ...

Simulating Light Propagation during I-PDT of Locally Advanced Head and Neck Cancer

E. Oakley [1], H. Arshad [1], G. Shafirstein [1],
[1] Roswell Park Cancer Institute, Buffalo, NY, USA

Interstitial photodynamic therapy (I-PDT) can be applied for the treatment of locally advanced head and neck squamous cell carcinoma (LA-HNSCC). The complex anatomy of LA-HNSCC requires careful planning of the light delivery and fiber insertion. We have developed an image-based approach, using finite element analysis, to suggest the number and location of treatment fibers needed for I-PDT and to ...

Experimental Investigations and Numerical Simulation of Electrothermally Actuated Micro-gripper - new

B. K. S. Kishor[1], T. Ramesh [1],
[1] NIT Trichy, Tiruchirappalli Tamil Nadu, India.

At the micron-level, thermal actuation exerts larger forces compared to the widely-used electrostatic actuation. To obtain large displacements at low voltage the principle of Electro Thermal actuation is used. It works on the principle of selective non-uniform Joule heating which results in thermal expansion due to constraints. The Microgripper presented here is studied and analyzed by carrying ...

Electro-Thermal Analysis of a Micro Heater for Lab-on-Chip Applications - new

S. Kalaiselvi [1], L. Sujatha [1],
[1] Centre for MEMS and Micro Fluidics, Rajalaksmi Engineering College, Chennai,Tamil Nadu,India

The Lab -on - chip (LOC) application integrates multiple functionality on a single chip which readily manipulate and delivers the result. Micro Electro Mechanical Systems (MEMS) micro heater is widely used in heating the various Lab -on-a- chip (LOC) application, which offers great accuracy, minimum power consumption and compatible to CMOS technology. This paper discusses two different design ...

Nature-Inspired Surfaces and Engineering Applications Using COMSOL Multiphysics® - new

R. C. Thiagarajan [1], P. Asutosh[1],
[1] ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka, India.

Engineering design has long been dominated by orthogonal Cartesian principles. Nature inspired equation based mathematical surfaces are under renewed interest due to their innovative design potential and practical viability by 3D printing. In this paper, the parametric surface modelling feature of COMSOL Multiphysics® is leveraged for developing engineering structures from equation based ...

Numerical Investigation of Electroosmotic Flow in Convergent Divergent Micronozzle

V. Gnanaraj[1], V. Mohan[1], and B. Vellaikannan[1]
[1]Thiagarajar College of Engineering, Madurai, Tamilnadu, India

A fundamental understanding of the transport phenomena in microfluidic channels is critical for systematic design and precise control of such miniaturized devices towards the integration and automation of Lab-on- a-chip devices. Electroosmotic flow is widely used to transport and mix fluids in microfluidic systems. Electroosmotic transport in convergent divergent micronozzle is significant in ...

Modeling the Collimator-Detector Scattering Using Stochastic Differential Equations and COMSOL

A. Jeremic[1], T. Farncombe[2], S. Liu[2], and Y. Abdul-Rehman[1]
[1]Department of Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada
[2]Department of Radiology, McMaster University, Hamilton, Ontario, Canada

Single photon emission computed tomography (SPECT) is a nuclear medicine imaging technique that uses gamma rays. It has been especially useful for bone scans, cardiac perfusion imaging, tumor scans and brain imaging. The main advantage of SPECT imaging is that it can target particular tissue receptors allowing one to focus on the imaging of the diseased tissue. In most cases Monte Carlo ...

Inlay Fixed Partial Denture Framework 3-D Structural Integrity Validation Using COMSOL Multiphysics®

T.M.R. Alho[1]

[1]Department of Electrical Engineering and Automation, University of Vaasa, Vaasa, Finland

Manual manufacturing of inlay fixed partial denture frameworks by metal casting can take hours of dental practitioners work time. This paper introduces 3-D simulations of premanufactured inlay fixed partial denture framework assembled from laser cut sheet metal parts. The study gives a good estimation of how well the frameworks can withstand strong human occlusion forces and masticatory cycle. ...

Hydro-Mechanical Response of Sedimentary Rocks of Southern Ontario to Past Glaciations

O. Nasir[1], M.Fall[1], T.S. Nguyen[1,2], and E. Evgin[1]
[1]Department of Civil Engineering, University of Ottawa, Ottawa, Ontario, Canada
[2]Canadian Nuclear Safety Commission (CNSC), Ottawa, Ontario, Canada

The last glacial cycle in the Northern Hemisphere started approximately 120,000 year ago. During that cycle, Southern Ontario was buried under a continental ice cap, with a maximum thickness of up to 3km. The ice cap retreated approximately 10,000 years ago. The COMSOL Multiphysics code is used to model the physical processes of the impact of past glaciations on the evolution of hydraulic system ...

Wireless Interaction of Neighboring Two Arm Archimedes Spiral Coils in the RF Electromagnet Range

A. Kalinowski[1]
[1]Naval Undersea Warfare Center/ Division Newport, Newport, RI, USA

The paper addresses a class of problems for modeling and consequently simulating the electromagnetic field radiation pattern from two arms Archimedes spiral coils. The frequency spatial wavelengths relative to the coil dimensions are in a range where the electromagnetic Maxwell’s equations are solved numerically via the RF Module of COMSOL Multiphysics. ...

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