Dynamical Spreading and Memory Retention of Particle Suspensions under Power Law Potential.

Authors

Ido Fanto, Yuval Rosenblum, Ori Harel, Matan Yah Ben Zion, Naomi Oppenheimer

Published in

Physical review letters. Volume 136. Issue 24. Pages 248202. Jun 19, 2026.

Abstract

We study the overdamped dynamic spreading of a suspension of particles under a repulsive power law potential. We predict that the suspension spreads in a self-similar form, with its radius growing in time with a power independent of the dimension. We confirm this prediction experimentally using magnetized colloids with dipolar repulsion. Numerical simulations corroborate the experiments and further predict a categorically different behavior at a critical power, below which the initial distribution is no longer concentrated at the origin. Instead, particles accumulate at the perimeter and retain a long-lived memory of their original pattern. Below this threshold, the initial distribution seeds the resulting pattern, encoding the future structure of a dynamically evolving system.

PMID:
42412471
Bibliographic data and abstract were imported from PubMed on 07 Jul 2026.

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