Optical Levitation

Optical levitation is a technique that uses focused laser beams to suspend small objects in mid-air without physical contact. The laser's light exerts radiation pressure—tiny pushes that counteract gravity—enabling particles, such as microscopic beads or droplets, to float stably. By carefully controlling the laser's intensity and direction, scientists can manipulate these objects precisely. This method is useful in experiments requiring contactless handling, enabling studies in physics, biology, and materials science. Essentially, optical levitation employs light’s momentum to hold and move tiny objects in space, opening new possibilities for research and technology.