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Isotachophoresis with emulsions
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic of the microfluidic chip. The channels have a 20 m (depth) × 50 m (width) cross section.

Image of FIG. 2.
FIG. 2.

Schematic of the experimental setup.

Image of FIG. 3.
FIG. 3.

(a) Schematic of oil droplet accumulation at the ITP transition zone. (b) Micrographs taken at different times showing the accumulation of oil droplets at the ITP transition zone in a system without PVP.

Image of FIG. 4.
FIG. 4.

(a) Time series showing the coalescence of two droplets. (b) Time series showing the growth of a droplet by successive coalescence events. (c) Time series showing the formation of an oil film after droplet growth.

Image of FIG. 5.
FIG. 5.

(a) Droplet diameter as a function of time owing to successive coalescence events, based on a sample of 12 droplets. (b) Corresponding distribution of droplet growth rates. (c) Corresponding distribution of maximum droplet diameters before merging with the channel walls.

Image of FIG. 6.
FIG. 6.

(a)–(f) Time series showing the formation of a droplet agglomerate in a system with PVP.

Image of FIG. 7.
FIG. 7.

Trajectory of a single droplet trapped in a vortex behind the ITP transition zone.

Image of FIG. 8.
FIG. 8.

Rotational velocity of droplets inside the vortex structures as a function of applied voltage.

Image of FIG. 9.
FIG. 9.

Pictorial representation of a possible mechanism explaining the formation of vortices behind the ITP transition zone.


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Scitation: Isotachophoresis with emulsions