Cited by 204Acoustic Wave Phenomena ResearchMetamaterials and Metasurfaces ApplicationsAdvanced Materials and Mechanics

Designing perturbative metamaterials from discrete models

Open access
Matlack, Kathryn H., Serra-Garcia, Marc, Palermo, Antonio, Huber, Sebastian D., Daraio, Chiara·2018·Nature Materials

Abstract

Identifying material geometries that lead to metamaterials with desired functionalities presents a challenge for the field. Discrete, or reduced-order, models provide a concise description of complex phenomena, such as negative refraction, or topological surface states; therefore, the combination of geometric building blocks to replicate discrete models presenting the desired features represents a promising approach. However, there is no reliable way to solve such an inverse problem. Here, we introduce 'perturbative metamaterials', a class of metamaterials consisting of weakly interacting unit cells. The weak interaction allows us to associate each element of the discrete model with individual geometric features of the metamaterial, thereby enabling a systematic design process. We demonstrate our approach by designing two-dimensional elastic metamaterials that realize Veselago lenses, zero-dispersion bands and topological surface phonons. While our selected examples are within the mechanical domain, the same design principle can be applied to acoustic, thermal and photonic metamaterials composed of weakly interacting unit cells.

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  • The weak interaction allows us to approximate the effect of different geometric elements by adding up individual contributions, resulting in a drastic speedup of the calculation times.

    “Second, the weak interaction allows us to approximate the effect of different geometric elements by adding up individual contributions (See Ref. 28 for details), resulting in a drastic speedup of the calculation times.”

    From Observation of a phononic quadrupole topological insulator (2018) · cites this paper as [28]

  • The paper leveraged perturbative metamaterials to find a first implementation of a quantized quadrupole insulator.

    “we leveraged this technique to find a first implementation of a quantized quadrupole insulator, a new class of topological materials.”

    From Observation of a phononic quadrupole topological insulator (2018) · cites this paper as [28]

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Research works printed but not linked: 1

  1. [7]7. Bückmann, T., Thiel, M., Kadic, M., Schittny, R. & Wegener, M. An elastomechanical unfeelability cloak made of pentamode metamaterials. Nat. Commun. 5, 4130 (2014).

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Authors
Matlack, K. H., Serra-Garcia, M., Palermo, A., Huber, S. D., & Daraio, C.
Affiliations
  • ETH Zurich (CH)
  • University of Bologna (IT)
  • California Institute of Technology (US)
Venue
Nature Materials
Published
2018-01-15
Volume
17
Issue
4
Pages
323-328
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W2784238146
Cited by
204
References
60
Citations by year
2026: 12 · 2025: 22 · 2024: 16 · 2023: 40 · 2022: 24 · 2021: 27 · 2020: 25 · 2019: 29 · 2018: 9
FWCI
8.99
Type
journal article
Language
en
Open access
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Acoustic Wave Phenomena Research
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
discrete models, model reduction, inverse design, elastic metamaterials, negative refraction, mechanical metamaterials, metamaterial design

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