Microwave seminar | 09 October 2025

Microwave cavities are promising tools for axion dark matter detection, where uniform fields are essential for sensitivity. I will show how introducing a simple air gap in wire-medium–filled cavities allows precise control of field homogeneity. In particular, a quarter-plasma-wavelength gap yields highly uniform fields, offering a straightforward route to improved cavity performance.

Main paper/arXiv, related to the seminar, and other references

- Rustam Balafendiev, Constantin Simovski, Alexander J. Millar, and Pavel Belov. "Wire metamaterial filled metallic resonators." Physical Review B 106, no. 7 (2022): 075106.
- Jim A. Enriquez, Rustam Balafendiev, Alexander J. Millar, Constantin Simovski, and Pavel Belov. "Uniform field in microwave cavities through the use of effective magnetic walls." Physical Review Applied 23, no. 5 (2025): 054053.
- Denis Sakhno, Jim A. Enriquez, and Pavel A. Belov. "Volume-Preserving Deformation of Honeycomb Wire Media Enables Broad Plasma Frequency Tunability." arXiv preprint arXiv:2507.08156 (2025).