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Influences of streaming potential on cross stream migration of flexible polymer molecules in nanochannel flows
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10.1063/1.3157258
/content/aip/journal/jcp/130/24/10.1063/1.3157258
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/24/10.1063/1.3157258
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Chain center of mass density profiles for ; present BD simulations are compared to reported MD data (Ref. 14). Typical magnitudes of uncertainty are shown for BD simulation results.

Image of FIG. 2.
FIG. 2.

(a) Transverse velocity (made dimensionless with where is ) of the beads due to Soret effect for different values of We shown for the bottom half of the channel. Sign of the velocities indicates that the beads are pushed toward the centerline due to the Soret effect. (b) Chain center of mass density profiles; present BD simulations are compared to reported MD data (Ref. 14). Typical magnitudes of uncertainty are shown in Fig. 1.

Image of FIG. 3.
FIG. 3.

(a) Velocity profiles (normalized with respect to ) across the channel bottom half-height considering streaming effects, for different ionic concentrations and surface charge density values, (b) the corresponding chain center of mass density profiles across the channel section. Results are compared to the cases with no streaming effect considerations. We is considered to be 223 for all cases. (Inset) Magnified portion near the left peak.

Image of FIG. 4.
FIG. 4.

(a) Velocity profiles (normalized with respect to ) across channel half-height for different intensities of externally applied electric field (characterized by the values of ) with and without streaming effect; and for all cases, (b) corresponding chain center of mass density profiles across the channel section For all cases, is considered. Selection criteria of favorable values of used in these plots, which may be considered as important design bases, are illustrated through Fig. 5.

Image of FIG. 5.
FIG. 5.

Variation of gain factor with for different ionic concentration and surface charge density values, corresponding to . Favorable values may be chosen corresponding to the onset of the linear increase regime.

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/content/aip/journal/jcp/130/24/10.1063/1.3157258
2009-06-29
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influences of streaming potential on cross stream migration of flexible polymer molecules in nanochannel flows
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/24/10.1063/1.3157258
10.1063/1.3157258
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