What is Brownian Diffusion of particles?
• Brownian diffusion is erratic random movements of particles in a gas medium. Brownian diffusion is the dominant collection mechanism for particles less than 0.3 micrometer. It is especially significant for nanoparticles. Nanoparticles in a gas medium deflect slightly when gas molecules strike them. It causes the diffusion. • Diffusivity is a measure to which molecular collisions influence small particles. The diffusion coefficient is influenced by the particle size and gas medium conditions.
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