<ul><li>Scientists from the University of Wisconsin-Madison have developed a special material that can control the movement of objects in water using sound waves.</li><li>The material, a type of metamaterial created by Ph.D. student Dajun Zhang, has a sawtooth pattern on its surface that allows sound waves to push and pull objects in specific directions.</li><li>By attaching the metamaterial to objects like wood or plastic foam, Zhang was able to move them in water using sound waves, achieving precise control over their movement and rotation.</li><li>This touch-free manipulation technique has potential applications in underwater robotics, medical procedures like remote surgery, and targeted drug delivery within the human body.</li></ul>

Scientists use sound waves to move objects underwater—without touching them

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