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Sound Waves Focused Like A Camera Lens

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UNIVERSITY PARK, Pa., Aug. 10, 2012 — A metamaterial capable for the first time of manipulating a variety of acoustic waves with one simple device has been designed and computationally tested. The device holds promise for applications across various acoustic fields, from medical ultrasound to higher-sensitivity surface acoustic wave sensors and higher Q factor resonators. Man-made optical metamaterials have been used over the past decade for a variety of applications such as cloaking and perfect lenses. The basic principles of optical metamaterials apply to acoustic metamaterials: Artificial structures are created in...Read full article

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    Published: August 2012
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    transducer
    A transducer is a device or component that converts one form of energy into another. It is commonly used in various fields, including electronics, acoustics, and instrumentation, to facilitate the measurement, detection, or transmission of information. Transducers are essential in converting signals from one domain to another for processing or interpretation. Key points about transducers include: Energy conversion: Transducers convert energy from one form to another. The input energy can be...
    ultrasonic imaging
    The formation and display of three-dimensional images by ultrasonic energy. In one technique, the energy pulses from an ultrasonic transducer scan the object through a liquid medium and, receiving the reflected pulses, analyze them. The recorded data are replayed and displayed on a cathode-ray tube screen, and the image may be viewed from several perspectives.
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