6 papers
Design of ALPHA Phase I: A Plasma Haloscope for 10--20 GHz Post-Inflation Axions
ALPHA Collaboration, Xiran Bai, Rustam Balafendiev +54
The axion is a well-motivated hypothetical particle capable of resolving both the strong CP problem and the dark matter mystery, with recent post-inflationary cosmological simulati…
Single-shot near-field reconstruction of metamaterial dispersion
Eugene Koreshin, Denis Sakhno, Jim A. Enriquez +1
We present a single-shot near-field technique, where the near-field scan is performed on a single sample without repeating measurements or averaging over multiple samples, to recon…
Volume-Preserving Deformation of Honeycomb Wire Media Enables Broad Plasma Frequency Tunability
Denis Sakhno, Jim A. Enriquez, Pavel A. Belov
We demonstrate significant tunability of the plasma frequency in a wire medium by mechanically deforming a lattice of parallel metallic wires arranged at the nodes of a honeycomb s…
Dispersion Characteristics of a Glide-Symmetric Square Patch Metamaterial with Giant Anisotropy
Jim A. Enriquez, Eugene Koreshin, Juan P. Del Risco +2
This paper investigates the dispersion characteristics of a highly anisotropic metamaterial comprised of metal square patches arranged in a glide symmetry pattern and submerged in…
Uniform Field in Microwave Cavities Through the Use of Effective Magnetic Walls
Jim A. Enriquez, Rustam Balafendiev, Alexander J. Millar +2
Wire media (WM) resonators have emerged as promising realization for plasma haloscopes -- devices designed to detect axions, a potential component of dark matter. Key factors influ…
Tunable Epsilon Near Zero Metamaterial with Rotating Obround-Shaped Meta-Atoms
Rustam Balafendiev, Gagandeep Kaur, Jim A. Enriquez +4
A new design of a microwave-range ENZ metamaterial consisting of rods with an obround cross-section is proposed. The plasma frequency of the metamaterial can be tuned by rotating t…