Fick's law


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Fick's law

[′fiks ‚lȯ]
(physics)
The law that the rate of diffusion of matter across a plane is proportional to the negative of the rate of change of the concentration of the diffusing substance in the direction perpendicular to the plane.
References in periodicals archive ?
Zhong, Transport diffusion in one dimensional molecular systems: Power law and validity of Fick's law, AIP Advances, 5, 107145, (2015).
Thus, the mass and energy conservation are given by using Fick's law, Darcy's law and Fourier's law:
An observation of this figure shows that the dual stage saturation method that experimented with Fick's law equation result is the better approach of experimental data.
Table 4 presents the results fitted to the mathematical model of the Fick's Law for the seven drying tests along with the values of [R.sup.2] and [D.sub.ef].
(8,9) In this study, Fick's law of diffusion, with cyclical water concentrations applied to the exposed coating surface, is solved using Laplace transforms followed by time step rescaling to predict the asymptotic water concentration at the coating-metal interface based on the physical constants of the coating and the parameters of the accelerated weathering protocol.
This can be done by replacing plasma/nuclear membranes using membrane flux technique employing Fick's law of diffusion.
* STEP 2 Modeling concentration dynamics using Fick's law
(iii) the conditions at which the sample is stored (temperature and humidity) and the concentration gradient across the membrane, that is, the film (Permeability law, Fick's law) [23].
Due to the intermittent wetting and drying of the near-surface layer (approximately within the first 20 mm), particularly in tidal and splash zones, the transport mechanisms in this layer greatly differ from Fick's law of diffusion.