dynamic light scattering (DLS)

Dynamic light scattering (DLS) is a technique used to measure the size of tiny particles, such as nanoparticles or molecules, suspended in a liquid. It works by shining a laser light on the particles; as they move randomly due to Brownian motion, they scatter the light in fluctuating patterns. By analyzing these fluctuations over time, scientists can determine how fast the particles are moving, which allows them to calculate their average size. DLS is a quick, non-invasive method commonly used in research and industry to understand particle size distributions in solutions.