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Proceedings Paper

Acoustic metamaterials and metasurfaces: a transformative approach for phononic insulators and energy harvesting
Author(s): Badreddine Assouar; Shuibao Qi; Yong Li
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Paper Abstract

First, we will provide some recent advances on low-frequency phononic and acoustic insulators based on metasurfaces. We will introduce a new concept of acoustic absorption based on the coiling-up space design which exhibits extreme acoustic properties. A new acoustic absorber operating at 125Hz with deep-subwavelength thickness (~ λ/230) acting as an “acoustic sink” is designed and its functionalities are discussed. Second, as we are dealing with how to reduce or to absorb low-frequency sound/noise, we will explore a novel idea on the use in a positive manner these noises as a source of energy. We theoretically and numerically show the properties of a novel acoustic energy harvester resulting from the confinement and conversion of low-frequency acoustic/noise disturbances to electrical energy. We indeed present preliminary results showing a metamaterial structure producing an electrical power density of 0.54μw/cm3 for one confined frequency, which presents a very good value compared the others acoustic energy harvesting approaches.

Paper Details

Date Published: 27 January 2017
PDF: 9 pages
Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 101112B (27 January 2017); doi: 10.1117/12.2250271
Show Author Affiliations
Badreddine Assouar, Institut Jean Lamour, CNRS (France)
Univ. de Lorraine (France)
Shuibao Qi, Institut Jean Lamour, CNRS (France)
Univ. de Lorraine (France)
Yong Li, Institut Jean Lamour, CNRS (France)
Univ. de Lorraine (France)

Published in SPIE Proceedings Vol. 10111:
Quantum Sensing and Nano Electronics and Photonics XIV
Manijeh Razeghi, Editor(s)

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