S. Yushanov, J. Crompton, and K. C. Koppenhoefer, Altasim Technologies, OH, USA
When electromagnetic waves propagate through matter, they interact with inhomogeneities and particles that can locally disrupt the electron distribution, causing electromagnetic radiation and scattering. One mathematical model used to describe the scattering of electromagnetic waves is called Mie scattering, which provides a general solution independent of particle size. Examples of phenomena where Mie scattering applies include dust in the air, oil in water, and measuring cell nuclei in biological systems.
In order to model Mie scattering, Maxwell's equations are used to represent the scattered, incident, and internal fields, which are represented by infinite series when solved with an analytical approach. Using COMSOL Multiphysics, AltaSim Technologies has developed a simulation to easily obtain the rates of absorption, scattering, and extinction of electromagnetic energy, and the radiation forces present. They have used a perfectly matched layer (PML), far-field calculations, and surface boundary conditions to calculate the scattered energy. Their computational model contributes to the visualization and understanding of the interactions between particles and incident electromagnetic waves.
Suggested Stories
Magnets Improve Quality of High-Power Laser Beam Welding
High-power laser beam welding uses a localized heat source to achieve narrow deep welds and high welding rates. ...
Training Uncrewed Underwater Vehicles for Visualization of Subsurface Structures
By using simulation apps and machine learning techniques, USM researchers are laying the groundwork for UUVs capable ...
Giving Furniture Testing a Leg Up
Chairs must meet quality standards, which requires lengthy and costly testing. To reduce the burden on manufacturers, ...
Magnetic Transmissions Increase Lifespan of Offshore Wind Farms
Sintex is a developer and manufacturer of magnetic couplings, systems that transmit torque and power with ...
