diffuusia
Diffuusia is a proposed mechanism of transport that describes how diffusion in heterogeneous media can be coupled to evolving microstructures, producing time-dependent and non-Fickian transport behavior. In this view, solvent or solute fluxes respond not only to instantaneous concentration gradients but also to changes in the medium’s structure, such as porosity, connectivity, or mechanical deformation.
The term was coined in a theoretical framework developed by researchers at the fictional Institute for Diffusion
Mathematically, diffuusia is described by extended constitutive relations that incorporate memory effects or state variables representing
Applications discussed in theoretical treatments include transport through porous rocks, hydrogels, and battery electrodes, where structural
See also: diffusion, anomalous diffusion, non-Fickian diffusion, porous media, transport phenomena.