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Behavior of chiral active nematics confined to nanoscopic circular region

  • Regular Article - Soft Matter
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Abstract

We performed molecular dynamic simulations of a model active nematic confined to a two-dimensional nanoscopic circular region under both tangential and radial anchoring boundary conditions. This active material is assumed to be composed of elongated chiral particles which interact with each other by means of isotropic Lennard–Jones and anisotropic Maier–Saupe-like potentials. These particles have the lateral appendage emitting a jet of some substance generated by a certain internal chemical reaction. As a result, such elongated particles are exposed to both the reactive self-propelled force and the torque that provide an additional translational movement of particles and a self-rotation with respect to their geometric centers. It has been found that the chiral active nematics under consideration form time-dependent vortex-like structures with two +1/2 topological defects which are similar to experimentally observed structures in active materials

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Acknowledgements

This work was partially performed during my visit to Dipartimento di Matematica, Universita degli Studi a Pavia, Italy (October–November 2018) which was supported by the grant of the Italian Institute for Advanced Mathematics (INdAM). Author Contribution Statement: The paper was completely made by L. V. Mirantsev.

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  1. Institute for Problems of Mechanical Engineering, Russian Academy of Sciences, Bolshoi 61, V. O., St., Saint Petersburg, Russia, 199178

    L. V. Mirantsev

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  1. L. V. Mirantsev
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Correspondence to L. V. Mirantsev.

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Mirantsev, L.V. Behavior of chiral active nematics confined to nanoscopic circular region. Eur. Phys. J. E 44, 112 (2021). https://doi.org/10.1140/epje/s10189-021-00120-y

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