Electroosmosis in a system of ionite granules

Barinova, N. O.; Mishchuk, N. A.

doi:10.1134/s1061933x08060021

Cited by 7 publications

(22 citation statements)

References 13 publications

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“…However, if more than one pair or rows of beads are placed after another along the electric field, the measured velocity is smaller than that obtained for a single pair of beads, and decreases with decreasing distances along the field [46]. Such a decrease is related with the peculiarities of concentration polarization and current distribution in the system under investigation [46]. At small distances between the pairs of beads, the polarization of one pair affects the polarization of the next one, decreasing both the density of current through the next successive pair and the value of the induced charge created near their surface.…”

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchacontrasting

confidence: 53%

“…As it is shown in [45], the velocity of electroosmosis of the second kind for a pair of beads placed perpendicularly to the direction of an external electric field is close to the velocity near the surface of a single bead and reaches its maximum at the position of minimum bead distance. However, if more than one pair or rows of beads are placed after another along the electric field, the measured velocity is smaller than that obtained for a single pair of beads, and decreases with decreasing distances along the field [46]. Such a decrease is related with the peculiarities of concentration polarization and current distribution in the system under investigation [46].…”

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 86%

“…As a result, the local velocity in the gaps between the different pairs remains the same along whole chain [46]. Importantly, the pressure build-up increases with the number of beads along the externally imposed electric field.…”

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 97%

“…The peculiarities of liquid flow in the gap between two beads and a system of the beads were investigated in [45,46]. The results from these studies create a basis for the choice of optimal conditions for the design of an electroosmotic micropump.…”

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 99%

“…To obtain directed electroosmotic flow, a minimum of two beads placed at short distances should be used (Fig. 2B, see also [45,46]). …”

Section: General Notion Of Electroosmosis Of the Second Kind Near A Smentioning

confidence: 99%

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Micropump based on electroosmosis of the second kind

Mishchuk

Heldal²,

Volden³

et al. 2009

Electrophoresis

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A microfluidic pump based on electroosmosis of the second kind was designed and fabricated. Experimental results using DC and AC voltages showed a close to second-order relationship between flow and voltage, in good agreement with theory. The experimental flow rates were considerably lower than the predicted maximum for the micropumps, which can be attributed to the hydrodynamic resistance of the channel network. This also indicates that higher flow velocities are obtainable for modified pump designs.

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Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchacontrasting

confidence: 53%

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 86%

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 97%

Section: Electroosmosis Of the Second Kind Near Two Or More Ion-exchamentioning

confidence: 99%

“…To obtain directed electroosmotic flow, a minimum of two beads placed at short distances should be used (Fig. 2B, see also [45,46]). …”

Section: General Notion Of Electroosmosis Of the Second Kind Near A Smentioning

confidence: 99%

See 3 more Smart Citations

Micropump based on electroosmosis of the second kind

Mishchuk

Heldal²,

Volden³

et al. 2009

Electrophoresis

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show abstract

Microfluidic pump based on the phenomenon of electroosmosis of the second kind

Mishchuk

Heldal²,

Volden³

et al. 2011

Microfluid Nanofluid

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A micropump based on strong polarization of ion-exchange beads and corresponding actuation by electroosmosis of the second kind was designed and fabricated. Experimental results from operation with AC and DC voltage showed a close to second order relationship between flow and voltage, in good agreement with theory. The difference between experimental and theoretical flow rates and pressures is attributed to the hydrodynamic resistance of the channel network. A modified pump design which should yield higher flow rates and pressures was suggested.

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