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    Acoustic Lenses tagged posts

    New technique could Speed up the Development of Acoustic Lenses, Impact-resistant Films and other Futuristic Materials

    November 17, 2023, Categories  Physics

    Seven tall, rectangular columns stand against a black background. The columns are made of a lattice-like pattern and some of them tilt at the top. In the center of the image, a green beam of light reaches between the top of the image and the middle column.
    Caption: This optical micrograph shows an array of microscopic metamaterial samples on a reflective substrate. Laser pulses have been digitally added, depicting pump (red) and probe (green) pulses diagnosing a sample in the center. The LIRAS technique sweeps through all samples on the substrate within minutes.
    Credits:Credit: Courtesy of the researchers

    Metamaterials are products of engineering wizardry. They are made from everyday polymers, ceramics, and metals. And when constructed precisely at the microscale, in intricate architectures, these ordinary materials can take on extraordinary properties.

    With the help of computer simulations, engineers can play with any combination of microstructures to see how certain materials can transform, for instance, into sound-focusing acoustic ...

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