Acoustical Waves Tapped for Metamaterials

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LOS ALAMOS, N.M., April 7, 2011 — A very simple benchtop technique that uses the force of acoustical waves to create a variety of 3-D structures will benefit the rapidly expanding field of metamaterials and its myriad applications. Metamaterials are artificial materials engineered to have properties not found in nature. They usually gain their unusual properties — such as negative refraction that enables subwavelength focusing and negative bulk modulus – from structure rather than from composition. The new technique, developed by Los Alamos National Laboratory (LANL) researchers, is expected to make...Read full article

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    Published: April 2011
    Piezoelectricity is a property exhibited by certain materials in which they generate an electric charge in response to mechanical stress or deformation, and conversely, undergo mechanical deformation when subjected to an electric field. This phenomenon was discovered by Pierre and Jacques Curie in the late 19th century. The word piezoelectric originates from the Greek word "piezo," meaning to squeeze or press. The effect occurs due to the unique crystal structure of piezoelectric...
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