optical tweezer

An optical tweezer is a scientific tool that uses highly focused laser beams to hold and manipulate tiny particles, such as cells or molecules, without physical contact. The laser light creates a small but precise force that traps the particle at the beam’s focal point, allowing precise movement and measurement. This technique is widely used in biology and physics to study the properties of microscopic objects, analyze forces at the cellular or molecular level, and perform delicate manipulations that would be difficult or impossible with traditional tools.