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Applications of the Diffuse Double Layer
Particulate Science and Technology, 2002Studies of the diffuse double layer have entered an exciting phase due to advances made in fundamental areas of charged solid-liquid systems and the utility of this parameter in soil chemistry and material science. This review discusses the relevance of the Langmuirian approach and the application of the DLVO theory when attractive and repulsive forces
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DIFFUSION WITH MIGRATION IN THE DIFFUSE DOUBLE LAYER
Canadian Journal of Chemistry, 1963The polarization characteristics of the concentration of the reactive species are discussed when the effects of migration in the diffuse layer are accounted for. A limiting case (ξ0 → ∞) and some particular cases (|Zi/Z| = 0, 1, 2, 3, 4) are derived both for attraction and repulsion in the double layer. Linear approximations (and conditions sufficient
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On a convection–diffusion problem with a weak layer
Applied Mathematics and Computation, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Diffusion Limits for Flows in Thin Layers
SIAM Journal on Applied Mathematics, 1996(From the author's abstract.) The asymptotic behaviour of the dynamics of a test particle in a scattering medium between two parallel plates within small distance \(h\) of up to a few mean free paths is considered. Under an appropriate scaling for \(h\to 0\) (with constant ``opacity'' obtained by scaling the density of the scattering medium by \(I/h\)),
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Accounting for Diffuse Layer Ions in Triple-Layer Models
Journal of Colloid and Interface Science, 2002The triple-layer model is one of the most widely used surface complexation models for adsorption on mineral surfaces. In current implementations, the accounting of ions in the diffuse layer may be neglected, resulting in a charge imbalance in the modeled solution as well as errors in mass balance, particularly in low ionic strength solutions when ...
Marianne, Guerin, John, Seaman
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Gallium diffusion and diffusivity in CuInSe2 epitaxial layers
Applied Physics Letters, 1996Ga diffusion in single crystal Cu(In1−xGax)Se2 (CIGS) epitaxial layers on GaAs was measured as a function of the Cu/In ratio in the CIGS. No Ga was supplied intentionally during deposition but Ga was released by the substrates into the growing film. The concentration profile of the Ga was determined by secondary ion mass spectrometry and was fit by ...
David J. Schroeder +2 more
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Journal of the Atmospheric Sciences, 1969
Abstract When a relatively large diffusing cloud is transported by the flow in an Ekman layer, the trajectory and the rate of spread of the cloud are affected by the velocity variations both along and across the geostrophic wind. In a first approximation, these effects may be calculated with the aid of the classical diffusion equation using a constant ...
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Abstract When a relatively large diffusing cloud is transported by the flow in an Ekman layer, the trajectory and the rate of spread of the cloud are affected by the velocity variations both along and across the geostrophic wind. In a first approximation, these effects may be calculated with the aid of the classical diffusion equation using a constant ...
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Critical Reviews in Solid State and Materials Sciences, 1982
Abstract Surface diffusion has only recently become a topic of wide interest. This neglect is surprising, as diffusion plays an important role in surface processes. It has long been appreciated that the movement of reaction intermediates over catalyst particles is one of the significant steps in heterogeneous catalysis; this is well illustrated in ...
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Abstract Surface diffusion has only recently become a topic of wide interest. This neglect is surprising, as diffusion plays an important role in surface processes. It has long been appreciated that the movement of reaction intermediates over catalyst particles is one of the significant steps in heterogeneous catalysis; this is well illustrated in ...
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Laminar-Diffusion Boundary Layer—A Review
Journal of Applied Mechanics, 1955Abstract Diffusion theory has not assumed as yet the degree of organizational elegance accorded to fluid-flow and heat-transfer theories. In this paper mass-transport phenomena and their nondimensional correlation are summarized. In order that the similarities between energy, momentum, and mass-transport phenomena may be exhibited, the ...
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Compressive stress and its impact on the gas diffusion layer: A review
International Journal of Hydrogen Energy, 2022Pingwen Ming, Cong Feng, Cunman Zhang
exaly