Asymmetric sound absorption lets in the light

Many asymmetric absorbers are currently based on a single-port system, where sound enters one side and is absorbed before a rigid wall. In this design, however, light and air are unable to pass through the system. But new research shows that asymmetric absorption can be realized within a straight transparent waveguide. The waveguide allows light transmission and air flow through the absorber, and is described this week in Applied Physics Letters. …read more

Source: EurekAlert

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