Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hollow-Core Terahertz Optical Waveguides With Hyperuniform Disordered
  Reflectors   Novel hollow-core THz waveguides featuring hyperuniform disordered reflectors
are proposed, fabricated, and characterized. The reflector comprise
aperiodically positioned dielectric cylinders connected with dielectric
bridges. The proposed waveguides are fabricated using a 3D stereolithography
printer. Optical properties of the fabricated waveguide are investigated
numerically using finite element method, as well as experimentally using
THz-TDS spectroscopy. The results confirm that proposed waveguides exhibit
sizable photonic band gaps (20%) even when relatively low refractive index
contrast used (resin/air). Position of the band gaps can be easily tuned by
varying reflector geometrical parameters.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: stat