In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 39, No. 1R ( 2000-01-01), p. 236-
Abstract:
For electroosmotic flow (EOF) in a capillary, a method is
established to locate the frontal zone between the injected and ejected solutions, based on the change in the electric current
required to sustain the EOF when there is a difference of electric conductivity between the injected and ejected solutions. When
a certain voltage is applied between the two ends of a capillary filled with a solution, the EOF is generated in
the capillary, the flow profile of which is flat, in contrast to that of the Poiseuille flow. Although the EOF moves the frontal zone
with constant velocity, the monitored electric current required to sustain the EOF under a constant
voltage is found to change according to a hyperbolic function of time. By associating the injected and ejected solutions with
two resistances connected in series, an accurate account is given of the change in the electric current while the frontal zone progresses
through the capillary.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2000
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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