Controlling sound with acoustic metamaterials

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Most cited references 135

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Locally resonant sonic materials

Z Liu, X Zhang, Y Q Mao … (2000)

We have fabricated sonic crystals, based on the idea of localized resonant structures, that exhibit spectral gaps with a lattice constant two orders of magnitude smaller than the relevant wavelength. Disordered composites made from such localized resonant structures behave as a material with effective negative elastic constants and a total wave reflector within certain tunable sonic frequency ranges. A 2-centimeter slab of this composite material is shown to break the conventional mass-density law of sound transmission by one or more orders of magnitude at 400 hertz.

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Topological photonics

Ling-ling Lu, John Joannopoulos, Marin Soljacic (2014)

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From metamaterials to metadevices.

Nikolay I. Zheludev, Yuri Kivshar (2012)

Metamaterials, artificial electromagnetic media that are structured on the subwavelength scale, were initially suggested for the negative-index 'superlens'. Later metamaterials became a paradigm for engineering electromagnetic space and controlling propagation of waves: the field of transformation optics was born. The research agenda is now shifting towards achieving tunable, switchable, nonlinear and sensing functionalities. It is therefore timely to discuss the emerging field of metadevices where we define the devices as having unique and useful functionalities that are realized by structuring of functional matter on the subwavelength scale. In this Review we summarize research on photonic, terahertz and microwave electromagnetic metamaterials and metadevices with functionalities attained through the exploitation of phase-change media, semiconductors, graphene, carbon nanotubes and liquid crystals. The Review also encompasses microelectromechanical metadevices, metadevices engaging the nonlinear and quantum response of superconductors, electrostatic and optomechanical forces and nonlinear metadevices incorporating lumped nonlinear components.

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Title: Nature Reviews Materials

Abbreviated Title: Nat. Rev. Mater.

Publisher: Springer Nature

ISSN (Electronic): 2058-8437

Publication date Created: February 16 2016

Publication date (Print): February 16 2016

Volume: 1

Issue: 3

Page: 16001

Article

DOI: 10.1038/natrevmats.2016.1

SO-VID: 6213c94e-745e-4004-9614-c23b39bb6c56

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Controlling sound with acoustic metamaterials

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New Psychiatry

Most cited references 135

Locally resonant sonic materials

Topological photonics

From metamaterials to metadevices.

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