Electromagnetics Blog Posts
Plotting Spatial Derivatives of the Magnetic Field
Radiology, magnetophoresis, particle accelerators, and geophysics are all areas where it is useful to compute the spatial derivative of the magnetic field or magnetic flux density.
Piezoelectric Materials: Crystal Orientation and Poling Direction
Learn how to accurately model the crystal orientation and poling direction of a piezoelectric material in COMSOL Multiphysics®. We demonstrate how step by step…
Implementing a Simple Temperature Controller with a Component Coupling
Learn how to implement a simple temperature controller (a feedback loop) in a thermal process simulation in COMSOL Multiphysics®. We demonstrate with a silicon wafer example >>
Modeling Electromagnetic Waves and Periodic Structures
Oftentimes, it is of interest to model an EM wave (light, microwaves) incident upon periodic structures, such as diffraction gratings, metamaterials, and frequency selective surfaces.
Simulating an RF MEMS Switch
An RF MEMS switch is typically made up of a micromechanical bridge or cantilever, a substrate, and an electrode or dielectric layer. You can design such a device using RF simulation.
Red Blood Cell Separation from a Flow Channel
Lab-on-a-chip technology can be used to separate red blood cell via magnetophoresis — for example, motion induced by magnetic fields. Simulation can be used to optimize such devices.
MEMS Microphone Model Presented at ASA 166 in San Francisco
What is a MEMS microphone? Learn about this versatile device, as well as how to model it using COMSOL Multiphysics® with the add-on MEMS Module and Acoustics Module.
The Linac-MR Project: Tumor Tracking and Treatment
Not too long ago, my colleague Jennifer wrote a blog post about the Cross Cancer Institute, and the research being conducted there into the design of a new device for treating cancerous tumors. The device, known as the Linac-MR, is revolutionary due to its ability to both image and treat cancer cells simultaneously — a capability that had previously been regarded as near impossible due to the conflicting physics interactions involved. Such a device would allow for extremely precise radiation […]
