New Super Material Curves and Focuses Sound Waves
According to foreign media reports, researchers recently invented a new type of material with built-in "super power": it can bend, shape and focus sound waves, opening up new possibilities for medical imaging, personal audio and other acoustic devices. This material was developed by a group of researchers at the University of Sussex and the University of Bristol. They combined a layer of finely crafted material in the form of small bricks that can make sound waves passing through them. Phase change occurs.
By placing 16 different types of bricks in a single-layer grid, researchers can use sound waves to gently float tiny polystyrene particles.
Professor Sriram Subramanian, director of the interactive laboratory at the University of Sussex, explained: “We want to create acoustic devices that can operate sounds with the same ease and flexibility that LCDs and projectors can handle light.â€
This material is expected to be used in medical imaging and consumer audio products. Researchers have envisioned new areas of application, such as creating audio hotspots or focusing on high-intensity ultrasound to "attack" tumors in the body.
Bruce Drinkwater, professor of ultrasound at Bristol University, said: “In the future, I think this technology will have many exciting applications. We are now working hard to make this metamaterial layer dynamically reconfigurable, which means that we A cheaper imaging system can be created for medical diagnosis or crack diagnosis."
Dr. Gianluca Memoli of the University of Sussex responsible for the study said: "Our super material bricks can be printed out in 3D and then assembled together to form any imaginable sound field. "You can imagine a box of super material bricks. Can become DIY acoustic kit. â€
The results of these studies were published in the journal Nature Communications.
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