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Figure 1

From: Ultrathin Planar Metasurface-based Acoustic Energy Harvester with Deep Subwavelength Thickness and Mechanical Rigidity

Figure 1

Schematic illustration and mechanism of our design. (a) Schematic illustration of the mechanism for designing ultra-thin planar acoustic energy harvester for absorbing and harvesting airborne sound with wavelength much longer than its physical dimension. Inset: Configuration of an individual unit cell of the designed metasurface, which is composed of a perforated plate and a labyrinthine-like channel. (b) Two-dimensional cross-section view of the metasurface unit cell which clearly illustrates the coiled channel and the substantially elongated effective propagation distance (marked by the red arrow) of the incident acoustic wave after entering the resonator.

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