Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploration of Wire Array Metamaterials for the Plasma Axion Haloscope   A plasma haloscope has recently been proposed as a feasible approach to
extend the search for dark matter axions above 10 GHz ($\sim$ 40 $\mu$eV),
whereby the microwave cavity in a conventional axion haloscope is supplanted by
a wire array metamaterial. As the plasma frequency of a metamaterial is
determined by its unit cell, and is thus a bulk property, a metamaterial
resonator of any frequency can be made arbitrarily large, in contrast to a
microwave cavity which incurs a steep penalty in volume with increasing
frequency. We have investigated the basic properties of wire array
metamaterials through $S_{21}$ measurements in the 10 GHz range. Excellent
agreement with theoretical models is found, by which we project achievable
quality factors to be of order $10^{4}$ in an actual axion search. Furthermore,
schemes for tuning the array over a usable dynamic range ($30\%$ in frequency)
appear practical from an engineering perspective.

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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th