Ultrasound creates a tube that guides matter through the air

2026-10-20来源 Phys.org TechEnglish
A small stream of liquid flows quietly in midair, horizontally, as if inside an invisible tube. Nothing touches it. About 5 centimeters (2 inches) away, a cylinder lined with hundreds of tiny speakers surrounds the stream, yet there is no sound. The liquid simply keeps flowing.

原文：https://www.a8q9.cn/en/article/ultrasound-creates-a-tube-that-guides-matter-through-the-air-a7c283.html

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