See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.


View the COMSOL Conference 2023 Collection

MEMS and Nanotechnologyx

Modeling MEMS Gyroscopes with COMSOL Multiphysics®

James Ransley1, Nagi Elabbasi2
1Veryst Engineering
2Veryst Engineering, Needham, MA, United States

MEMS gyroscopes are typically challenging to model due to the variable length scales present in the device (typically 1000:1) and because the devices themselves are highly sensitive to both environmental and manufacturing process induced deviations from the ideal geometry. In this paper ... Read More

Electrode design for efficient excitation of vibrational modes in an AlN based PMUT

Bart Weekers1, M. Billen2, D. Tabruyn3, R. Haouari2, P. Gijsenbergh2, V. Rochus2, X. Rottenberg2, L. Lagae3
1Imec / KU Leuven, Leuven, Belgium
2Imec, Leuven, Belgium
3Imec & Department of Physics and Astronomy, KU Leuven, Leuven, Belgium

Piezoelectric micromachined ultrasound transducers (PMUTs) are gaining increasing interest as miniaturized, low-power devices which can be easily integrated with electronic systems for applications such as medical imaging, therapeutic ultrasound, and particle manipulation. This work ... Read More

FEM modeling of highly strained monocrystalline ZnTe/CdTe core-shell hetero-nanowires

Serhii Kryvyi1, Slawomir Kret1, Dorota Janaszko1, Jakub Plachta1, Piotr Wojnar1
1Institute of Physics, Polish Academy of Sciences, al. Lotnikow 32/46, 02-668 Warsaw, Poland

The monocrystalline semiconductor nanowires (NWs) attract great interest as they reveal new properties that differs from the ones of the bulk equivalents. In addition to small size (10-100 nm diameter), one of their advantages is extremely high surface to volume ratio. This determines ... Read More

Optimization of the geometry of MEMS Piezoelectric Energy Harvester cantilevers

N. Panayanthatta1, R. La Rosa2, C. Trigona3, E. Bano1, L. Montes1
1Grenoble Alpes University, IMEP-LaHC, Grenoble, France
2ST Microelectronics, Catane, Italy
3University of Catania, Catane, Italy

Here we optimize the geometry: proof mass length Lm to total length L, thickness of the piezoelectric material (Tp) to total cantilever thickness (T) for obtaining the maximum stress distribution (Smax), output voltage (Vout) and power performance (Pout) of the unimorph Cantilever beam ... Read More

Nanoscale heat transport model for microelectronic device design

Albert Beardo1
1Universitat Autònoma de Barcelona, Barcelona, Spain

Heat management has became a bottleneck in electronic engineering because of the large amount of energy released by current devices due to its extreme level of miniaturization [1]. This is a very important limitation to achieve, for example, terahertz clock-rates in computing and it is ... Read More

Finite element model of a helical swimming robot in COMSOL

Miguel A. López1, Cristina Nuevo-Gallardo1, José Emilio Traver1, Inés Tejado1, Blas M. Vinagre1
1University of Extremadura, Spain

This work presents a small swimmer model in a low Reynolds number ($Re$) environment governed by the equation of motion for Stokes flow in COMSOL Multiphysics®. The entity, a few centimetres helical robot, is located inside of a pipe full of silicone oil, where the forces caused by the ... Read More

Resonant Frequencies of a Nanoscale Fractal Resonator

Vassil Tzanov1, Jordi Llobet2, Francesc Torres1, Francesc Perez-Murano3, Nuria Barniol1
1Universitat Autonoma de Barcelona, Barcelona, Spain
2Iberian Nanotechnology Laboratory, Braga, Portugal
3Institut de Microelectronica de Barcelona, Spain

A top-down nanosize mechanical resonator has been fabricated with a shape of a fractal. The self-similar structure consists of star-polygons and it is suspended over a 10 μm trench and has width of 12 μm. Its thickness of 0.040 μm is defined by the fabrication process and prescribes ... Read More

Time-dependent temperature response in bulk materials from two heat sources

A. R. Stilling-Andersen1, B. Guralnik2, O. Hansen3, S. E. Hansen4, T. A. Marangoni5, D. H. Petersen6
1Department of Energy Conversion and Storage, Technical University of Denmark, Lyngby , Denmark
2CAPRES A/S, a KLA Company, Lyngby, Denmark
3DTU Nanolab, Technical University of Denmark, Lyngby , Denmark
4Department of Photonics Engineering, Technical University of Denmark, Lyngby , Denmark
5Department of Physics, Technical University of Denmark, Lyngby , Denmark
6Department of Energy Conversion and Storage, Technical University of Denmark, Lyngby , Denmark

Four-point probe resistance measurements on the microscale can induce significant localized heating which can be a source of measurement error, or an opportunity to measure thermal properties of materials. The amplitude and phase delay of the temperature affect micro four-point probe ... Read More

Cross Domain Modelling and Analysis of a Meander Beam MEMS Accelerometer in COMSOL Multiphysics® and SPICE

Mahdieh Shojaei Baghini1
1Delft University of Technology, Delft, Netherlands

In this work a bulk Silicon MEMS single-axis 8-beam accelerometer has been designed utilising meander beams in the Structural Mechanics and MEMS Module of COMSOL Multiphysics® as shown in Fig. 1.a. To obtain further insights into the design of the accelerometer, an electrical lumped ... Read More

Ray Tracing Derived from Wave-based Optics for Nanoscale Light Propagation Studies: A Theoretical Overview

J. J. Tyson1, T. Rahman1, S. A. Boden1
1University of Southampton, Southampton, Hampshire, United Kingdom

As the application of nanoscale structures becomes increasingly commonplace in modern technologies, the comprehensive modelling of the subject has taken centre stage in its understanding. Take the modern application of nanoscale texturing for optical anti-reflectance as an example here; ... Read More