Manikantan H. Tunable Collective Dynamics of Active Inclusions in Viscous Membranes.
PHYSICAL REVIEW LETTERS 2020;
125:268101. [PMID:
33449786 DOI:
10.1103/physrevlett.125.268101]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
We study hydrodynamic interactions and clustering mechanisms of active membrane inclusions within lipid bilayers. Pairs of inclusions display unique oscillatory dynamics that disappear when the 3D fluid adjacent to the membrane is confined. We reduce the governing equations to a coupled dynamical system whose phase behavior reveals the striking role of bulk confinement in enhancing cluster formation within the membrane. Using numerical simulations, we then extend this finding to demonstrate the role of confinement in controlling large-scale aggregation of membrane inclusions.
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