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Stealthy and hyperuniform isotropic photonic band gap structure in 3D

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2024

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Lui, Gianluc
Chaikin, Paul M.
Steinhardt, Paul J.
Torquato, Salvatore
Florescu, Marian

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Deutsche Forschungsgemeinschaft (DFG): 453041792

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PNAS Nexus. Oxford University Press. 2024, 3(9), pgae383. eISSN 2752-6542. Verfügbar unter: doi: 10.1093/pnasnexus/pgae383

Zusammenfassung

In photonic crystals, the propagation of light is governed by their photonic band structure, an ensemble of propagating states grouped into bands, separated by photonic band gaps. Due to discrete symmetries in spatially strictly periodic dielectric structures their photonic band structure is intrinsically anisotropic. However, for many applications, such as manufacturing artificial structural color materials or developing photonic computing devices, but also for the fundamental understanding of light-matter interactions, it is of major interest to seek materials with long range nonperiodic dielectric structures which allow the formation of isotropic photonic band gaps. Here, we report the first ever 3D isotropic photonic band gap for an optimized disordered stealthy hyperuniform structure for microwaves. The transmission spectra are directly compared to a diamond pattern and an amorphous structure with similar node density. The band structure is measured experimentally for all three microwave structures, manufactured by 3D laser printing for metamaterials with refractive index up to n=2.1. Results agree well with finite-difference-time-domain numerical investigations and a priori calculations of the band gap for the hyperuniform structure: the diamond structure shows gaps but being anisotropic as expected, the stealthy hyperuniform pattern shows an isotropic gap of very similar magnitude, while the amorphous structure does not show a gap at all. Since they are more easily manufactured, prototyping centimeter scaled microwave structures may help optimizing structures in the technologically very interesting region of infrared.

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530 Physik

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stealthy, hyperuniform, isotropic photonic band gap

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ISO 690SIEDENTOP, Lukas, Gianluc LUI, Georg MARET, Paul M. CHAIKIN, Paul J. STEINHARDT, Salvatore TORQUATO, Peter KEIM, Marian FLORESCU, 2024. Stealthy and hyperuniform isotropic photonic band gap structure in 3D. In: PNAS Nexus. Oxford University Press. 2024, 3(9), pgae383. eISSN 2752-6542. Verfügbar unter: doi: 10.1093/pnasnexus/pgae383
BibTex
@article{Siedentop2024-09-02Steal-71593,
  year={2024},
  doi={10.1093/pnasnexus/pgae383},
  title={Stealthy and hyperuniform isotropic photonic band gap structure in 3D},
  number={9},
  volume={3},
  journal={PNAS Nexus},
  author={Siedentop, Lukas and Lui, Gianluc and Maret, Georg and Chaikin, Paul M. and Steinhardt, Paul J. and Torquato, Salvatore and Keim, Peter and Florescu, Marian},
  note={Article Number: pgae383}
}
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