Particle tracking is a research area within the field of fluid mechanics and particle dynamics that involves studying the motion of individual particles within a fluid or other medium. This research typically uses advanced imaging techniques and mathematical models to track the movement of particles in order to understand their behavior, interactions, and the overall dynamics of the system. Particle tracking is used in various applications, including studying the behavior of pollutants in water systems, the motion of cells in biological tissues, and the dispersion of airborne particles in the atmosphere.