The Cloak of Silence -- Acoustic Cloaking Material Designed

Engineers have designed a material that redirects sounds and could be used to shield objects from noises. The sound-shielding material would be the first acoustic cloaking device.
clipped from news.bbc.co.uk
British Broadcasting Corporation

Experts unveil 'cloak of silence'

Scientists have shown off the blueprint for an "acoustic cloak", which could make objects impervious to sound waves.

The design of the cloaking materials, published in the New Journal of Physics, shows that making an acoustic shield "can be done in a straightforward and simple way," says Steven Cummer, an electrical engineer at Duke University who was involved in theconstruction of the first light cloak in 2006.

clipped from www.ee.duke.edu

Steven A. Cummer

Jeffrey N. Vinik Associate Professor
Electrical and Computer Engineering Department

Duke University

clipped from www.ee.duke.edu

Simulation of fields interacting with an ideal cloaking shell.

Fabricated cylindrical cloaking shell.

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BBC NEWS | Science/Nature | Experts unveil 'cloak of silence'
Nuisance Noise Silenced By Acoustic Cloak
Steve Cummer's Home Page
Steve Cummer's Cloaking Research Page
Technology Review: Acoustic Cloak Designed