Modeling a MOS Capacitor with the Semiconductor Module

Caty Fairclough June 20, 2018

Silicon planar devices, imaging sensors, and microprocessors often include a metal-oxide-silicon (MOS) capacitor. To ensure that these devices perform as expected in an application, engineers can accurately analyze their designs using simulation. With the Semiconductor Module, an add-on product to the COMSOL Multiphysics® software, there are multiple methods to do just that…

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Caty Fairclough June 19, 2018

What sparked Blaise Pascal’s interest in mathematics? One possibility is that when Pascal’s father tried to put off teaching it to his son, it didn’t go as planned. Instead, the delay piqued Pascal’s interest and he wound up teaching himself mathematics, developing an early fascination with the subject. Today, Blaise Pascal is known for his work in mathematics as well as in other areas, such as philosophy and theology.

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Kirill Shaposhnikov June 18, 2018

A thorough analysis of a loudspeaker driver is not limited to a frequency-domain study. Some desirable and undesirable (but nonetheless exciting) effects can only be caught by a nonlinear time-domain study. Here, we will discuss how system nonlinearities affect the generated sound and how to use the COMSOL Multiphysics® software to perform a nonlinear distortion analysis of a loudspeaker driver.

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Brianne Costa June 14, 2018

After World War II, a boom in the economy caused Americans to buy a record number of cars (leading to serious levels of pollution). Today, we have more energy-efficient vehicles — such as hybrid and electric options — and another “boom” is occurring, this time for autonomous vehicles (AVs). Again, pollution is an issue, but in a different way: There’s a debate over whether self-driving cars should have hybrid engines to maximize profit or all-electric engines to minimize pollution.

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Christian Wollblad June 13, 2018

We have already discussed the factors that make a high-quality mesh and how to prepare a CFD model geometry for meshing. In this follow-up blog post, learn about physics-controlled meshing, adaptive mesh refinement, and how to use a variety of meshing tools in the COMSOL Multiphysics® software for your fluid flow simulations.

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Pär Persson Mattsson June 12, 2018

In a previous blog post, we explained how to run a job from the COMSOL Multiphysics® software on clusters directly from the COMSOL Desktop® environment, without any interaction with a Linux® operating system terminal. Since this terminal is sometimes treated with excessive respect, the ability to start a cluster job directly from the graphical user interface is one of the most useful features in the COMSOL® software. Plus, there’s more to it… Enter the Cluster Sweep node.

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Christian Wollblad June 11, 2018

The quality of a computational fluid dynamics (CFD) model is often determined by the quality of the mesh used to solve the problem. A good mesh facilitates convergence, reduces memory requirements, and results in accurate solutions. It is therefore worthwhile to invest time and thought into creating the mesh when solving a CFD problem. In this blog post, we describe the factors of a quality mesh and how to prepare a fluid flow model geometry for meshing.

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Thomas Forrister June 10, 2018

The early 1800s were difficult for the townsfolk of Dijon, France. They’d made several attempts to supply the region with clean water by drilling wells, but the wells were too few, too dirty, and too dry. Fortunately, Henry Darcy, an engineer and Dijon native dedicated to public service, found a solution. His study of fluid dynamics for the project led to the formulation of the equation now known as Darcy’s law, as well as other contributions to hydraulics.

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Ed Fontes June 6, 2018

The Adidas® Telstar® soccer ball is the official ball of the 2018 FIFA World Cup™, and the Nike® Ordem V soccer ball is used in the seven largest national leagues in Europe, including the top three: the Spanish La Liga, the English Premier League, and the Italian Serie A. Previously, we discussed an experimental setup for measuring the terminal velocity of these two soccer balls to see if there’s a difference that could affect player performance. Here’s what we found…

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Thomas Forrister June 5, 2018

The greenhouse effect has made it necessary for scientists to develop combustion processes that minimize the accumulation of carbon dioxide in the atmosphere. Possible fuels in these processes include biomass and other biofuels, which recycle carbon within a short timescale. But there’s a downside: Combustion of these materials produces carbon and ash particles that must be removed from the exhaust. To improve particle filtration, researchers studied electrostatic filter designs using models that were validated by comparing them to experimental data.

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Mranal Jain June 4, 2018

If you want to create an animation from your simulation results, the COMSOL Multiphysics® software offers a variety of powerful and flexible options. In this blog post, we will explore the idea of creating a nontrivial animation by combining slices along the azimuthal direction for a 3D model.

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