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.
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.
Steven A. Cummer
Jeffrey N. Vinik Associate Professor
Electrical and Computer Engineering Department
Duke University
Simulation of fields interacting with an ideal cloaking shell.
Fabricated cylindrical cloaking shell.
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Related:
BBC NEWS | Science/Nature | Experts unveil 'cloak of silence'Nuisance Noise Silenced By Acoustic CloakSteve Cummer's Home PageSteve Cummer's Cloaking Research PageTechnology Review: Acoustic Cloak Designed
clipped from www.technologyreview.com
clipped from www.ee.duke.edu
