Orientational order and morphology of clusters of self-assembled Janus swimmers
| Autor: | Ignacio Pagonabarraga, Eloy Navarro-Argemí, Chantal Valeriani, Francisco Alarcon |
|---|---|
| Přispěvatelé: | European Cooperation in Science and Technology, Ministerio de Economía y Competitividad (España), Universidad Complutense de Madrid, Universitat de Barcelona |
| Rok vydání: | 2019 |
| Předmět: |
Prison population
Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Social reintegration Suspensions (Chemistry) media_common.quotation_subject Prison Social rehabilitation Criminology Condensed Matter - Soft Condensed Matter 01 natural sciences 010305 fluids & plasmas Aggregation (Chemistry) Fluid dynamics Perception Agregació (Química) Dinàmica de fluids 0103 physical sciences Suspensions (Química) 010306 general physics Psychology media_common Qualitative research |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Digital.CSIC. Repositorio Institucional del CSIC instname Recercat. Dipósit de la Recerca de Catalunya |
| Popis: | 15 pags., 23 figs., 4 apps. Due to the combined effect of anisotropic interactions and activity, Janus swimmers are capable to self-assemble in a wide variety of structures, many more than their equilibrium counterpart. This might lead to the development of novel active materials capable of performing tasks without any central control. Their potential application in designing such materials endows trying to understand the fundamental mechanism in which these swimmers self-assemble. In the present work, we study a quasi-two-dimensional semidilute suspensions of two classes of amphiphilic spherical swimmers whose direction of motion can be tuned: either swimmers propelling in the direction of the hydrophobic patch or swimmers propelling in the opposite direction (toward the hydrophilic side). In both systems we have systematically tuned swimmers' hydrophobic strength and signature and observed that the anisotropic interactions, characterized by the angular attractive potential and its interaction range, in competition with the active stress, pointing toward or against the attractive patch gives rise to a rich aggregation phenomenology. This work was possible thanks to the access to MareNostrum Supercomputer at Barcelona Supercomputing Center (BSC). This article is based on work from COST Action MP1305, supported by COST (European Cooperation in Science and Technology). This work was supported by Grant No. FIS2016-78847-P of the MINECO and the UCM/ Santander No. PR26/16-10B-2. I.P. acknowledges MINECO and DURSI for financial support under Projects No. FIS2015- 67837- P and No. 2017 SGR-884, respectively. F.A. acknowledges funding from MINECO Juan de la Cierva-formación program: FJCI-2017-33580. |
| Databáze: | OpenAIRE |
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