Novel Metamaterial Vastly Improves Quality of Ultrasound Imaging

evanescent waves  are transmitted by the new 3-D holey-structured metamaterial

University of California, Berkeley, scientists have found a way to overcome one of the main limitations of ultrasound imaging — the poor resolution of the picture

Continue reading… “Novel Metamaterial Vastly Improves Quality of Ultrasound Imaging”

Light And Sound Vibrations Trapped Together In Nanocrystal For First Time

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Top: Scanning electron micrograph of the optomechanical crystal. Bottom: closer view of the device’s nanobeam.

Researchers at the California Institute of Technology (Caltech) have created a nanoscale crystal device that, for the first time, allows scientists to confine both light and sound vibrations in the same tiny space. Continue reading… “Light And Sound Vibrations Trapped Together In Nanocrystal For First Time”

First Hyperlens For Sound Waves Created

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The acoustic hyperlens is fashioned from 36 brass fins arranged in the shape of a hand-held fan.

Ultrasound and underwater sonar devices could “see” a big improvement, thanks to development of the world’s first acoustic hyperlens. Created by researchers with the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), the acoustic hyperlens provides an eightfold boost in the magnification power of sound-based imaging technologies. Continue reading… “First Hyperlens For Sound Waves Created”