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Interactions in active colloids

Liebchen, Benno ; Mukhopadhyay, Aritra K. (2024)
Interactions in active colloids.
In: Journal of Physics: Condensed Matter, 2021, 34 (8)
doi: 10.26083/tuprints-00020362
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Interactions in active colloids
Language: English
Date: 19 March 2024
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Journal of Physics: Condensed Matter
Volume of the journal: 34
Issue Number: 8
Collation: 33 Seiten
DOI: 10.26083/tuprints-00020362
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

The past two decades have seen a remarkable progress in the development of synthetic colloidal agents which are capable of creating directed motion in an unbiased environment at the microscale. These self-propelling particles are often praised for their enormous potential to self-organize into dynamic nonequilibrium structures such as living clusters, synchronized super-rotor structures or self-propelling molecules featuring a complexity which is rarely found outside of the living world. However, the precise mechanisms underlying the formation and dynamics of many of these structures are still barely understood, which is likely to hinge on the gaps in our understanding of how active colloids interact. In particular, besides showing comparatively short-ranged interactions which are well known from passive colloids (Van der Waals, electrostatic etc), active colloids show novel hydrodynamic interactions as well as phoretic and substrate-mediated ‘osmotic’ cross-interactions which hinge on the action of the phoretic field gradients which are induced by the colloids on other colloids in the system. The present article discusses the complexity and the intriguing properties of these interactions which in general are long-ranged, non-instantaneous, non-pairwise and non-reciprocal and which may serve as key ingredients for the design of future nonequilibrium colloidal materials. Besides providing a brief overview on the state of the art of our understanding of these interactions a key aim of this review is to emphasize open key questions and corresponding open challenges.

Uncontrolled Keywords: active colloids, active matter, phoretic interactions, self-propulsion, microswimmers, phoresis, chemotaxis
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-203623
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics > Theory of Soft Matter
Date Deposited: 19 Mar 2024 10:05
Last Modified: 21 Jun 2024 07:14
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20362
PPN: 519275659
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