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Invisibility Cloaks and More: Force of Acoustical Waves Tapped for Metamaterials, Los Alamos National Laboratory Study


4/7/2011 7:15:44 AM

ScienceDaily (Apr. 5, 2011) — A very simple bench-top technique that uses the force of acoustical waves to create a variety of 3D structures will benefit the rapidly expanding field of metamaterials and their myriad applications -- including "invisibility cloaks." Metamaterials are artificial materials that are engineered to have properties not found in nature. These materials usually gain their unusual properties -- such as negative refraction that enables subwavelength focusing, negative bulk modulus, and band gaps -- from structure rather than composition.

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