Optical traps, also known as optical tweezers, are scientific tools that use focused laser beams to manipulate small particles, such as biological cells or microscopic beads. By creating a gradient of light intensity, these traps can hold and move particles without physical contact, allowing researchers to study their properties and behaviors in real time. These devices are widely used in biophysics and cell biology to investigate processes like DNA manipulation and protein interactions. Optical traps enable scientists to apply precise forces to individual molecules, providing insights into fundamental biological mechanisms and advancing our understanding of cellular functions.