Results 131 to 140 of about 1,879 (179)
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Electroosmosis-Driven Nanofluidic Diodes
The Journal of Physical Chemistry B, 2020Fundamental understanding of ion transport in a fluidic channel is of critical importance for realizing iontronics. Here we report on asymmetric ion transport in a low thickness-to-diameter aspect ratio nanopore. Under uniform salt concentration conditions, the cross-pore ionic current showed ohmic characteristics with no bias polarity dependence.
Iat Wai Leong +4 more
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Electroosmosis in human dentine in vitro
Archives of Oral Biology, 2020To determine the rate of fluid flow through human dentine due to electroosmosis during iontophoresis of either 2 % lignocaine with epinephrine, Ringer's solution, epinephrine, or distilled water.Experiments were carried out on 24 intact extracted human premolars. Dentine was exposed at the tip of the buccal cusp.
Kanittha, Kijsamanmith +2 more
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ac electroosmosis in rectangular microchannels
The Journal of Chemical Physics, 2005Motivated by the growing interest in ac electroosmosis as a reliable no moving parts strategy to control fluid motion in microfluidic devices for biomedical applications, such as lab-on-a-chip, we study transient and steady-state electrokinetic phenomena (electroosmosis and streaming currents) in infinitely extended rectangular charged microchannels ...
Campisi, Michele +2 more
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On the Mechanism of AC Electroosmosis
Advanced Materials Research, 2014Previously researchers considered ions in electric double layers (EDL) to analyze the phenomenon of alternating current electroosmosis (ACEO). However, they did not give a deep interpretation about the formation mechanism of ACEO and their theories cannot explain some experimentally observed phenomena.
Chao Chao Dong, Zhe Yao Wang
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On electroosmosis and related phenomena
Journal of Membrane Science, 1983Abstract We describe the transport processes occurring in a conducting liquid system with a diaphragm separating two subsystems of equal temperature and composition, but with different values of pressure and electric potential, in terms of measurable quantities.
R. Haase, K. Harff
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A Hydrodynamic Model for Electroosmosis
Industrial & Engineering Chemistry Fundamentals, 1971A hydrodynamic model fur electroosmosis in ion-exchange membranes has been developed, based on the unidirectional flow of macroscopic spheres in a homogeneous bounded medium. Corrections have been incorporated to account for the influence of the matrix, viscosity changes due to ion-solvent interaction, and the molecular size of the ionic sphere ...
Barry R. Breslau, Irving F. Miller
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1997
Abstract The reason is that in equilibrium (in the center-of-mass system) there are no current densities, even though the fields themselves may be non-zero. We have already used this fact implicitly in Section 3.4.1, where for a horizontally placed channel the gravitational force was balanced by minus the gradient of the hydrostatic ...
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Abstract The reason is that in equilibrium (in the center-of-mass system) there are no current densities, even though the fields themselves may be non-zero. We have already used this fact implicitly in Section 3.4.1, where for a horizontally placed channel the gravitational force was balanced by minus the gradient of the hydrostatic ...
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Journal of Colloid and Interface Science, 1996
Electroosmosis can be conveniently used to assess the electrokinetic potential of granular matter compressed in a plug. The method is based on measuring the flux of the surrounding solution through a capillary tube. A procedure is described that accounts for the pressure drop across the capillary which, if neglected, may affect the results of the ...
Niels P. Ryde, Egon Matijević
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Electroosmosis can be conveniently used to assess the electrokinetic potential of granular matter compressed in a plug. The method is based on measuring the flux of the surrounding solution through a capillary tube. A procedure is described that accounts for the pressure drop across the capillary which, if neglected, may affect the results of the ...
Niels P. Ryde, Egon Matijević
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Journal of Colloid Science, 1964
Abstract Electroosmosis is measured of wool yarn and fabric in equilibrium with aqueous buffer solutions. The electroosmotic flow vs. pH curve shows a minimum ascribed to fiber conductance. Approximate equations are developed to account for this effect. Transport of water through the fibers is estimated to be negligible.
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Abstract Electroosmosis is measured of wool yarn and fabric in equilibrium with aqueous buffer solutions. The electroosmotic flow vs. pH curve shows a minimum ascribed to fiber conductance. Approximate equations are developed to account for this effect. Transport of water through the fibers is estimated to be negligible.
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