Dynamics of Fluid Vesicles in Flow through Structured Microchannels

Details Dynamics of Fluid Vesicles in Flow through Structured Microchannels Dynamics of Fluid Vesicles in Flow through Structured Microchannels

2008-11-06

arxiv.org/abs/0811.0862v2

EPL 89, 28002 (2010).

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 6 figures

Scientific paper

The dynamics of fluid vesicles is studied under flow in microchannels, in which the width varies periodically along the channel. Three types of flow instabilities of prolate vesicles are found. For small quasi-spherical vesicles -- compared to the average channel width -- perturbation theory predicts a transition from a state with orientational oscillations of a fixed prolate shape to a state with shape oscillations of symmetrical ellipsoidal or bullet-like shapes with increasing flow velocity. Experimentally, such orientational oscillations are observed during the slow migration of a vesicle towards the centerline of the channel. For larger vesicles, mesoscale hydrodynamics simulations and experiments show similar symmetric shape oscillation at reduced volumes $V^* \gtrsim 0.9$. However, for non-spherical vesicles with $V^* \lesssim 0.9$, shapes are found with two symmetric or a single asymmetric tail.

Affiliated with

Also associated with

No associations

Rating

Dynamics of Fluid Vesicles in Flow through Structured Microchannels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamics of Fluid Vesicles in Flow through Structured Microchannels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of Fluid Vesicles in Flow through Structured Microchannels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-630278