Splitting and self-propelling active droplets

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• Rajesh Singh, DAMTP
• Tuesday 18 February 2020, 13:00-14:00
• MR11, CMS.

If you have a question about this talk, please contact Etienne Fodor.

Starting from a scalar field theory with mass and momentum conservation (model H), splitting and self-propulsion of droplets will be described in this talk when terms, which do not respect the time-reversal symmetry, are added to the model H. A self-shearing instability is obtained if active contractile stress is added to the momentum conservation equation. This instability interrupts the growth of droplets by splitting them. The contractile active stress has the effect of reversing the sign of the effective tension which arrests the growth. In the second part of the talk, a mechanism to obtain self-propulsion of active droplets by modifying the model H will be described. These results will be used to rationalize recent experiments in active matter.

This talk is part of the DAMTP Statistical Physics and Soft Matter Seminar series.

This talk is included in these lists:

• All CMS events
• DAMTP Statistical Physics and Soft Matter Seminar
• MR11, CMS
• Soft Matter
• bld31

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