diffusion coefficients

How is Diffusion Coefficient Measured?

Measuring the diffusion coefficient at the nanoscale can be challenging due to the small size of the particles. Several techniques are employed:
Dynamic Light Scattering (DLS): Measures the fluctuation in the intensity of scattered light to determine particle size and diffusion coefficient.
Fluorescence Recovery After Photobleaching (FRAP): Involves bleaching a fluorescently labeled particle and observing the time taken for fluorescence to recover due to diffusion.
Nuclear Magnetic Resonance (NMR): Utilizes magnetic fields to measure the diffusion of particles in a medium.

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