![]() ![]() ![]() On the contrary, this project aims at exploring DLS principles and boundaries with low-cost components and open-source design. Some recent equipment can even determine the shape of non-spherical particles! Typical commercial DLS equipments are expensive (typically over 40k£) because of the use of high quality lasers and detectors, allowing measurements over a broad range of particle sizes and concentrations. In DLS, particles size is back-calculated from the way light scattered from a laser beam evolves with time as particles undergo Brownian motion in the fluid. In particular, Dynamic Light Scattering (DLS) is widely used for dilute particles suspensions. For submicron particles however, more advanced and expensive techniques have to be employed such as electron microscopy or light scattering. For particles larger than about a micron, optical microscopy can be used in conjunction with image analysis softwares. Characterising the size of micro and nano-particles is important in many applications such as protein aggregation and complex fluids studies. ![]()
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