Jul 26, 2021
Acoustic Tweezers Can Pick Objects Up With Sound Waves – Without Any Physical Contact
Posted by Genevieve Klien in categories: biological, chemistry, particle physics
Hemispherical array of ultrasound transducers lifts objects off reflective surfaces.
Researchers from Tokyo Metropolitan University have developed a new technology which allows non-contact manipulation of small objects using sound waves. They used a hemispherical array of ultrasound transducers to generate a 3D acoustic fields which stably trapped and lifted a small polystyrene ball from a reflective surface. Although their technique employs a method similar to laser trapping in biology, adaptable to a wider range of particle sizes and materials.