Acoustic levitation

Acoustic levitation is a technique that uses sound waves to lift and manipulate small particles or liquids without physical contact. It relies on powerful sound waves creating regions of varying pressure, called nodes and antinodes. When an object is positioned at a node, the pressure differences from the sound waves can counteract gravity, allowing it to float in mid-air. This phenomenon has applications in materials science, pharmaceuticals, and even in the study of delicate substances, as it prevents contamination from surfaces. Essentially, it’s a fascinating way to use sound to control matter.