1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Modeling the interactions between compliant microcapsules and pillars in microchannels
Rent:
Rent this article for
USD
10.1063/1.2753150
/content/aip/journal/jcp/127/3/10.1063/1.2753150
http://aip.metastore.ingenta.com/content/aip/journal/jcp/127/3/10.1063/1.2753150

Figures

Image of FIG. 1.
FIG. 1.

Capsule relative velocity as a function of capillary number for 2D capsules with different sizes, which move steadily in a straight channel driven by a fixed pressure gradient.

Image of FIG. 2.
FIG. 2.

(Color) (a) Snapshot of a nonadhesive capsule moving inside a channel with a constriction formed by two pillars. (b) Closeup of the flow field in the narrow gap formed by the capsule’s shell and the pillar. Arrows show the velocity of the fluid and the strain inside the capsule’s elastic layer is scaled by the color bar . The capillary number . Periodic boundary conditions are imposed on the domain boundaries along the flow direction.

Image of FIG. 3.
FIG. 3.

(Color) Snapshots of nonadhesive capsules with capillary numbers (a) and (b) moving in the channel. Each series includes six successive images of the capsules taken at equal time intervals (moving from left to right). The range for the magnitude of the strain is for (a) and for (b).

Image of FIG. 4.
FIG. 4.

Translational velocity for a nonadhesive capsule along direction as a function of its center of mass position for different values of capillary number Ca. Shell stiffness is reflected by the change in capillary number Ca. The vertical dashed lines mark the boundaries of the constriction along the direction.

Image of FIG. 5.
FIG. 5.

(Color) Snapshot of an adhesive capsule moving through the constriction formed by the pillars. Adhesive interaction strength is . Other parameters are the same as in Fig. 1.

Image of FIG. 6.
FIG. 6.

(Color) Snapshots of nonadhesive (a) and adhesive (b) capsules with capillary number moving through the constriction. The dimensionless adhesion strength for adhesive capsules is chosen as . Each series includes six successive images of the capsules taken at equal time intervals (moving from left to right). The range for the magnitude of the strain is .

Image of FIG. 7.
FIG. 7.

Translational velocity for an adhesive capsule along the direction as a function of its center of mass position for different values of . The vertical dashed lines mark the boundaries of the constriction along the direction. Here, the capillary number is fixed at .

Image of FIG. 8.
FIG. 8.

Effect of adhesion on maximum (a) and minimum (b) translational velocity of a capsule as a function of capillary number Ca. The adhesion strength for adhesive capsules is chosen as . Log scale is used for the axis.

Image of FIG. 9.
FIG. 9.

Effect of adhesion on the maximum deformation of the capsules as a function of capillary number Ca. The dimensionless adhesion strength for adhesive capsules is chosen as . Log scale is used for the axis.

Tables

Generic image for table
Table I.

Comparisons of capsule velocity in two dimensions and axisymmetric cases for rigid capsules.

Generic image for table
Table II.

Comparison of power-law coefficients in 2D and axisymmetric cases for deformable capsules.

Loading

Article metrics loading...

/content/aip/journal/jcp/127/3/10.1063/1.2753150
2007-07-19
2014-04-24
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Modeling the interactions between compliant microcapsules and pillars in microchannels
http://aip.metastore.ingenta.com/content/aip/journal/jcp/127/3/10.1063/1.2753150
10.1063/1.2753150
SEARCH_EXPAND_ITEM