ArticleProceedings of the National Academy of Sciences of the United States of America2015
Shape control and compartmentalization in active colloidal cells.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
- Phase-field modeling of colloid-polymer mixtures in microgravity.NPJ microgravity · 2025Article
- Emergent functional dynamics of link-bots.Science advances · 2025Article
- Cell deformability drives fluid-to-fluid phase transition in active cell monolayers.Science advances · 2024Article
- Geometrical control of interface patterning underlies active matter invasion.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Programmable self-organization of heterogeneous microrobot collectives.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Compartmentalizing and sculpting nanovesicles by phase-separated aqueous nanodroplets.RSC advances · 2022Article
- Surfactants and rotelles in active chiral fluids.Science advances · 2021Article
- Effective interactions mediated between two permeable disks in an active fluid.Scientific reports · 2020Article
- Scale-free, programmable design of morphable chain loops of kilobots and colloidal motors.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Shape-directed rotation of homogeneous micromotors via catalytic self-electrophoresis.Nature communications · 2019Article
- Colloidal nanoelectronic state machines based on 2D materials for aerosolizable electronics.Nature nanotechnology · 2018Article
- Towards developing principles of protein folding and dynamics in the cell.Physical biology · 2018Review
- Rotating robots move collectively and self-organize.Nature communications · 2018Article
- Shape-directed dynamics of active colloids powered by induced-charge electrophoresis.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
- Odd viscosity in chiral active fluids.Nature communications · 2017Article
- Rotational Diffusion of Soft Vesicles Filled by Chiral Active Particles.Scientific reports · 2017Article
- Fluctuation spectra and force generation in nonequilibrium systems.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- Killing by Type VI secretion drives genetic phase separation and correlates with increased cooperation.Nature communications · 2017Article
- Spatiotemporal order and emergent edge currents in active spinner materials.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Shape and Displacement Fluctuations in Soft Vesicles Filled by Active Particles.Scientific reports · 2016Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Small autonomous machines like biological cells or soft robots can convert energy input into control of function and form. It is desired that this behavior emerges spontaneously and can be easily switched over time. For this purpose we introduce an active matter system that is loosely inspired by biology and which we term an active colloidal cell. The active colloidal cell consists of a boundary and a fluid interior, both of which are built from identical rotating spinners whose activity creates convective flows. Similarly to biological cell motility, which is driven by cytoskeletal components spread throughout the entire volume of the cell, active colloidal cells are characterized by highly distributed energy conversion. We demonstrate that we can control the shape of the active colloidal cell and drive compartmentalization by varying the details of the boundary (hard vs. flexible) and the character of the spinners (passive vs. active). We report buckling of the boundary controlled by the pattern of boundary activity, as well as formation of core-shell and inverted Janus phase-separated configurations within the active cell interior. As the cell size is increased, the inverted Janus configuration spontaneously breaks its mirror symmetry. The result is a bubble-crescent configuration, which alternates between two degenerate states over time and exhibits collective migration of the fluid along the boundary. Our results are obtained using microscopic, non-momentum-conserving Langevin dynamics simulations and verified via a phase-field continuum model coupled to a Navier-Stokes equation.
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