optical tweezers

Optical tweezers are a scientific tool that use focused laser beams to manipulate tiny objects, such as cells or molecules, with high precision. The laser light creates a small force that traps the object at the beam's focus, allowing researchers to move, hold, or examine the object without physical contact. This technique relies on the momentum of light to exert gentle forces, making it useful in fields like biology and physics for studying the mechanical properties of microscopic materials or controlling individual molecules.