Optical tweezers are a scientific tool that uses a highly focused laser beam to trap and manipulate small particles at the microscopic level. This technique takes advantage of the momentum of photons in the laser beam to create a trapping force that can hold and move particles with precision. Optical tweezers have a wide range of applications in various fields such as biology, physics, and chemistry, enabling researchers to study the behavior and properties of individual molecules, cells, and other small objects. The ability to control and manipulate particles with optical tweezers has revolutionized research in areas such as single-molecule biophysics, nanotechnology, and materials science.