Transforming acoustic waves with a chip
Acoustic waves are best known as the invisible delivery agents bringing voices, car horns, or our favorite song to our ears. But the waves can also move physical objects, like an item vibrating atop a concert speaker — offering the power to turn sound into a tool.
Since receiving a 2024 National Science Foundation CAREER Award, Assistant Professor of Mechanical Engineering Zhenhua Tian and his team have explored how to use acoustic waves as invisible grabbers to manipulate fluid flows and tiny particles on electronic chips. ...