Cited by 993Metamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsAcoustic Wave Phenomena Research

The DOI matches its Crossref record; 29 of the 30 references it cites were found in a registry or an index.

Dirac cones induced by accidental degeneracy in photonic crystals and zero-refractive-index materials

Abstract

A zero-refractive-index metamaterial is one in which waves do not experience any spatial phase change, and such a peculiar material has many interesting wave-manipulating properties. These materials can in principle be realized using man-made composites comprising metallic resonators or chiral inclusions, but metallic components have losses that compromise functionality at high frequencies. It would be highly desirable if we could achieve a zero refractive index using dielectrics alone. Here, we show that by employing accidental degeneracy, dielectric photonic crystals can be designed and fabricated that exhibit Dirac cone dispersion at the centre of the Brillouin zone at a finite frequency. In addition to many interesting properties intrinsic to a Dirac cone dispersion, we can use effective medium theory to relate the photonic crystal to a material with effectively zero permittivity and permeability. We then numerically and experimentally demonstrate in the microwave regime that such dielectric photonic crystals with reasonable dielectric constants manipulate waves as if they had near-zero refractive indices at and near the Dirac point frequency.

Overview

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Crossref · 10.1038/nmat3030

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29 of 29 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Huang, X., Lai, Y., Hang, Z. H., Zheng, H., & Chan, C. T.
Affiliations
Hong Kong University of Science and Technology (HK)
Corresponding author
Chan, C. T.
Venue
Nature Materials
Published
2011-05-29
Volume
10
Issue
8
Pages
582-586
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W1964548562
Cited by
993
References
30
Citations by year
2026: 41 · 2025: 63 · 2024: 48 · 2023: 72 · 2022: 62 · 2021: 74 · 2020: 81 · 2019: 89 · 2018: 79 · 2017: 94 · 2016: 89 · 2015: 62 · 2014: 54 · 2013: 38 · 2012: 41
FWCI
17.62
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Topics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photonic Crystals and Applications
  • Physical Sciences › Physics and Astronomy › Acoustics and Ultrasonics › Acoustic Wave Phenomena Research
Keywords
Dirac cones, Dirac point, photonic crystals, zero refractive index, zero-index metamaterials, accidental degeneracy, dielectric photonic crystals, effective medium theory, wave manipulation, Brillouin zone

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