Current distribution in resonant mode for an anapole resonator

Thread starter yefj
Start date Jul 16, 2025

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SUMMARY

The discussion focuses on optimizing the current distribution in resonant mode for an anapole resonator, specifically addressing the effects of bridge width on current homogeneity. As the bridge narrows from 50µm x 25µm, the current becomes more uniform across the structure, leading to a more consistent magnetic field. The user seeks methods to achieve a centered current distribution during resonance. Suggestions for achieving this goal are requested, indicating a need for effective design strategies.

PREREQUISITES

Understanding of electromagnetic theory and resonant modes
Familiarity with anapole resonators and their applications
Knowledge of current distribution and magnetic field concepts
Experience with simulation tools for electromagnetic analysis

NEXT STEPS

Research techniques for enhancing current homogeneity in resonant structures
Explore simulation software such as COMSOL Multiphysics for electromagnetic modeling
Investigate design modifications for anapole resonators to achieve centered current distribution
Learn about the impact of bridge geometry on magnetic field uniformity

USEFUL FOR

Electrical engineers, physicists, and researchers involved in the design and optimization of resonant electromagnetic devices, particularly those working with anapole resonators.

Jul 16, 2025

yefj

Hello, I am building an anapole resonator as shown below.for wide 50uX25u bridge we have a current going into two separated streams on the sides of the bridge.

but as the bridge gets thinner the current is much more homogeneos(and so is the magnetic field) over this bridge as shown below
How can I make on this resonance the current (magnetic field be more homogeneous over the bridge.
I have made also a video shown below. Is there a way to make the current centerend in the middle?
Thanks.

2025-07-16 12-59-00.mkv