Electroosmosis


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electroosmosis

[i‚lek·trō·äs′mō·səs]
(physical chemistry)
The movement in an electric field of liquid with respect to colloidal particles immobilized in a porous diaphragm or a single capillary tube.

Electroosmosis

 

(also electroendosmosis), the movement of a liquid through capillaries or porous diaphragms upon application of an external electric field. It is one of the principal electrokinetic phenomena. Electroosmosis is used to remove excess moisture from the soil in soil compaction for road building and the construction of hydraulic engineering installations, to dry peat, and to purify water and liquids used in industry.

References in periodicals archive ?
Induced charge electroosmosis flow (ICEOF) phenomenon, which is caused by the interaction between the applied electric field and the electric double layer formed on the polarizable surface, and zeta potential changes on the polarizable solid are shown in Figure 1.
Particle manipulation and fluid flow control using AC electro-osmosis have been reported in various forms, such as biased AC electroosmosis [11, 12], and 3D AC electro-osmosis pump [13, 14], travelling wave AC electro-osmosis pump [15], asymmetric electrode AC electro-osmosis pump [16] and particle traps [17-20].
The resulting flow from AC electroosmosis and ETF observed by Wang et al.
Seventeen chapters cover basic concepts, governing equations, basic flow solutions, hydraulic resistance and compliance, diffusion, time-dependent flow, capillary effects, electrohydrodynamics, electroosmosis, dielectrophoresis, magnetophoresis, thermal transfer, two-phase flow, complex flow patterns, acoustofluidics, optofluidics, and nanofluidics.
Design-modeling tools are needed that rapidly simulate the complex underlying phenomena such as electroosmosis, electrophoresis, sample dispersion, mixing, and biochemical reactions without significantly compromising accuracy (1-5).
There are also electro thermal forces, in which the current creates non-uniform heating in the fluid, leading to coulomb and dielectric forces; and electroosmosis, in which ion flow creates tiny forces in the fluid.
The theoretical aspects of this electrokinetic phenomenon (electroosmosis by Reuss) were formulated in 1897 by Kohlrausch [2].
Electroosmosis is electric-field-induced fluid movement resulting from the surface charge on the microchannel walls.
In situ experiments on low permeability soils provide evidence that pump-and-treat flow rates can be increased using electroosmosis in conjunction with emplacement of granular graphite within hydraulic fractures (Murdoch and Chen 1997).
Navy during the war, later met a number of German engineers who told him that this use of electroosmosis was fairly common.
This process of applying electric current across a saturated soil mass results in electrolysis, transport of species by ionic migration, electroosmosis, and diffusion.
Myristyl trimethylammonium bromide was changed to its hydroxide salt, which was needed to reverse the electroosmosis and to get faster analysis get faster analysis and to enhance sensitivity in UV detection.