Latest Acoustic cloak Stories

2011-08-15 15:31:22

Optical cloaking devices that enable light to gracefully slip around a solid object were once strictly in the realm of science fiction. Today they have emerged as an exciting area of study, at least on microscopic scales. A new twist on this intriguing technology can now be "seen" in the field of acoustics. A team of researchers from the Universitat Politecnica de Valencia and the Universidad de Valencia have created a prototype of an acoustic cloak by using a 2-D mathematical model. Unlike...

2011-06-25 07:39:27

Scientists have developed a new device that makes objects invisible to sound waves. The approach borrows ideas from attempts to "cloak" objects from light. The scientists said it uses simple plastic sheets with arrays of holes, and could be put to use in making ships invisible to sonar or in an acoustic design for concert halls. Researchers have put forth effort to try and create "invisibility cloaks" since the feasibility of the idea was theorized in 2006. Those approaches are based on...

2011-01-06 11:17:25

Liz Ahlberg, Physical Sciences Editor, University of Illinois In one University of Illinois lab, invisibility is a matter of now you hear it, now you don't. Led by mechanical science and engineering professor Nicholas Fang, Illinois researchers have demonstrated an acoustic cloak, a technology that renders underwater objects invisible to sonar and other ultrasound waves. "We are not talking about science fiction. We are talking about controlling sound waves by bending and twisting them in a...

2008-06-16 12:15:00

Scientists believe they have developed plans for new technology that could make sound proof homes a reality. Reported in the New Journal of Physics, the blueprints for an "acoustic cloak" could make objects impervious to sound waves. "The mathematics behind cloaking has been known for several years," said Professor John Pendry of Imperial College London, UK, an expert in cloaking."What hasn't been available for sound is the sort of materials you need to build a cloak out of."Scientists had...

2008-01-09 15:05:24

DURHAM, N.C. -- Contrary to earlier predictions, Duke University engineers have found that a three-dimensional sound cloak is possible, at least in theory. Such an acoustic veil would do for sound what the "invisibility cloak" previously demonstrated by the research team does for microwaves--allowing sound waves to travel seamlessly around it and emerge on the other side without distortion (http://www.pratt.duke.edu/news/?id=792). "We've devised a recipe for an acoustic material that would...

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  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.