Non-Fickian diffusion describes a type of diffusion where the rate of transfer deviates from Fick’s laws, often due to complex interactions within the material. It occurs in systems with non-homogeneous or heterogeneous media, or where interactions such as chemical reactions or viscoelastic behavior affect diffusional behavior.

Non-Fickian Diffusion

Type of diffusion

Rate of transfer

Fick’s laws

Complex interactions refer to the intricate and often unpredictable ways in which different elements or systems influence each other, leading to outcomes that cannot be easily deduced from the properties of the individual components alone. These interactions are fundamental in understanding phenomena in fields ranging from ecology to economics, where the behavior of the whole system is more than just the sum of its parts.

Complex Interactions

Non-homogeneous media

Heterogeneous media refers to materials or systems composed of distinct components with differing properties, such as varying phases or compositions, which significantly influence their overall behavior and characteristics. Understanding and modeling heterogeneous media are crucial in fields like material science, geophysics, and engineering, where predicting the interaction of different materials is essential for designing and optimizing applications.

Heterogeneous Media

Chemical reactions involve the transformation of substances through the breaking and forming of chemical bonds, resulting in the conversion of reactants into products. These reactions are governed by the principles of thermodynamics and kinetics, which dictate the feasibility and rate of these transformations.

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