Current distribution in resonant mode for an anapole resonator

Thread starter yefj
Start date Jul 16, 2025

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The discussion focuses on optimizing the current distribution in an anapole resonator, specifically addressing the challenge of achieving a more homogeneous magnetic field across a narrowing bridge. As the bridge width decreases, the current becomes more uniform, but the user seeks methods to center the current more effectively. Suggestions for improving current homogeneity include adjusting the resonator design and exploring different materials or configurations. The user has also provided a video to illustrate the current distribution issues. The goal is to enhance the magnetic field uniformity during resonance.

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

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