Nucleation and shape dynamics of model nematic tactoids around adhesive colloids

Nicholas B. Ludwig; Kimberly Weirich; Eli Alster; Thomas A. Witten; Margaret L. Gardel; Kinjal Dasbiswas; Suriyanarayanan Vaikuntanathan

doi:10.1063/1.5141997

arXiv · 1909.03481

Nucleation and shape dynamics of model nematic tactoids around adhesive colloids

Nicholas B. Ludwig·Kimberly Weirich·Eli Alster·Thomas A. Witten·Margaret L. Gardel·Kinjal Dasbiswas·Suriyanarayanan Vaikuntanathan

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Abstract

Recent experiments have shown how nematically-ordered tactoid shaped actin droplets can be reorganized and divided by the action of myosin molecular motors. In this paper, we consider how similar morphological changes can potentially be achieved under equilibrium conditions. Using simulations, both atomistic and continuum, and a phenomenological model, we explore how the nucleation dynamics, shape changes, and the final steady state of a nematic tactoid droplet can be modified by interactions with model adhesive colloids that mimic a myosin motor cluster. Our results provide a prescription for the minimal conditions required to stabilize tactoid reorganization and division in an equilibrium colloidal-nematic setting.

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Nicholas B. Ludwig, Kimberly Weirich, Eli Alster, Thomas A. Witten, Margaret L. Gardel, Kinjal Dasbiswas, Suriyanarayanan Vaikuntanathan. 2019-09-08. Nucleation and shape dynamics of model nematic tactoids around adhesive colloids. https://doi.org/10.1063/1.5141997

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