The Acoustic Levitation

Acoustic levitation uses powerful sound waves to suspend objects in midair without physical contact. By generating high-frequency sound waves that create areas of high and low pressure, these waves form a stable "standing wave" pattern. The object is trapped in the low-pressure zones called nodes, where the upward acoustic force balances gravity. This technique allows for contactless manipulation of tiny objects, useful in scientific experiments and material handling, especially with delicate or hazardous materials. It showcases the ability of sound to exert controlled forces, enabling non-invasive suspension and positioning without physical supports.