June 26, 2011
George Soros said at a panel discussion in Vienna today that “We are on the verge of an economic collapse which starts, let’s say, in Greece, but it could easily spread.” He also explained how the crisis will probably end, according to >>Bloomberg: it’s “probably inevitable” that a mechanism will have to be put in [...]
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June 26, 2011
We present the design, fabrication, and performance analysis for a class of two-dimensional acoustic cloaking coatings in air. Our approach takes advantage of transformation acoustics and linear coordinate transformations that result in shells which are homogeneous, broadband, and compact. The required material parameters are highly anisotropic; however, we show that they are easily achievable in [...]
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