Current distribution in resonant mode for an anapole resonator

Thread starter yefj
Start date Jul 16, 2025

AI Thread Summary

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

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?

View full post »

Thread 'What happens if shielded cable has a short to the shield?'

While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...

View full post »

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...

View full post »