What are the Mechanisms of Diffusion in Nanotechnology?
There are several mechanisms through which diffusion occurs in nanotechnology:
Fickian diffusion: Governed by Fick's laws, this type involves the movement of particles from high to low concentration areas, driven by concentration gradients. Knudsen diffusion: Occurs when the mean free path of molecules is comparable to the dimensions of the nanopores, leading to collisions with the pore walls rather than with other molecules. Surface diffusion: Involves the movement of atoms or molecules along the surface of a material, which can be significant in catalysis and other surface-mediated processes.
