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Title: Emergence of inertia in the low-Reynolds regime of self-diffusiophoretic motion
For isotropic swimming particles driven by self-diffusiophoresis at zero Reynolds number (where particle velocity responds instantaneously to applied force), the diffusive timescale of emitted solute can produce an emergent quasi-inertial behavior. These particles can orbit in a central potential and reorient under second-order dynamics, not the first-order dynamics of classical zero-Reynolds motion. They are described by a simple effective model that embeds their history-dependent behavior as an effective inertia, this being the most primitive expression of memory. The system can be parameterized with dynamic quantities such as particle size and swimming speed, without detailed knowledge of the diffusiophoretic mechanism. Published by the American Physical Society2024  more » « less
Award ID(s):
2011839
PAR ID:
10541070
Author(s) / Creator(s):
;
Publisher / Repository:
American Physical Society
Date Published:
Journal Name:
Physical Review E
Volume:
109
Issue:
5
ISSN:
2470-0045
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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