Shape-dependent motility of polar inclusions in active baths

Dolai P, Rajput AS, Kumar KV (2024)

Publication Language: English

Publication Type: Journal article

Publication year: 2024

Journal

Physical Review E American Physical Society

Book Volume: 110

Article Number: 014607

Journal Issue: 1

DOI: 10.1103/PhysRevE.110.014607

Abstract

Collections of persistently moving active particles are an example of a nonequilibrium heat bath. One way to study the nature of nonequilibrium fluctuations in such systems is to follow the dynamics of an embedded probe particle. With this aim, we study the dynamics of an anisotropic inclusion embedded in a bath of active particles. By studying various statistical correlation functions of the dynamics, we show that the emergent motility of this inclusion depends on its shape as well as the properties of the active bath. We demonstrate that both the decorrelation time of the net force on the inclusion and the dwell time of bath particles in a geometrical trap on the inclusion have a nonmonotonic dependence on its shape. We also find that the motility of the inclusion is optimal when the volume fraction of the active bath is close to the value for the onset of motility induced phase separation.

Authors with CRIS profile

Pritha Dolai Lehrstuhl für Mathematik in den Lebenswissenschaften

Involved external institutions

Tata Institute of Fundamental Research (TIFR) IN India (IN)

How to cite

APA:

Dolai, P., Rajput, A.S., & Kumar, K.V. (2024). Shape-dependent motility of polar inclusions in active baths. Physical Review E, 110(1). https://doi.org/10.1103/PhysRevE.110.014607

MLA:

Dolai, Pritha, Aditya Singh Rajput, and K. Vijay Kumar. "Shape-dependent motility of polar inclusions in active baths." Physical Review E 110.1 (2024).

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