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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01241
|2 doi
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|a eng
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| 100 |
1 |
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|a Winkens, Mitch
|e verfasserin
|4 aut
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|a Self-Organization Emerging from Marangoni and Elastocapillary Effects Directed by Amphiphile Filament Connections
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|c 2022
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 08.09.2022
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|a Date Revised 04.09.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Self-organization of meso- and macroscale structures is a highly active research field that exploits a wide variety of physicochemical phenomena, including surface tension, Marangoni flow, and (elasto)capillary effects. The release of surface-active compounds generates Marangoni flows that cause repulsion, whereas capillary forces attract floating particles via the Cheerios effect. Typically, the interactions resulting from these effects are nonselective because the gradients involved are uniform. In this work, we unravel the mechanisms involved in the self-organization of amphiphile filaments that connect and attract droplets floating at the air-water interface, and we demonstrate their potential for directional gradient formation and thereby selective interaction. We simulate Marangoni flow patterns resulting from the release and depletion of amphiphile molecules by source and drain droplets, respectively, and we predict that these flow patterns direct the growth of filaments from the source droplets toward specific drain droplets, based on their amphiphile depletion rate. The interaction between such droplets is then investigated experimentally by charting the flow patterns in their surroundings, while the role of filaments in source-drain attraction is studied using microscopy. Based on these observations, we attribute attraction of drain droplets and even solid objects toward the source to elastocapillary effects. Finally, the insights from our simulations and experiments are combined to construct a droplet-based system in which the composition of drain droplets regulates their ability to attract filaments and as a consequence be attracted toward the source. Thereby, we provide a novel method through which directional attraction can be established in synthetic self-organizing systems and advance our understanding of how complexity arises from simple building blocks
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Water
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|a 059QF0KO0R
|2 NLM
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| 700 |
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|a Korevaar, Peter A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 38(2022), 35 vom: 06. Sept., Seite 10799-10809
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:35
|g day:06
|g month:09
|g pages:10799-10809
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01241
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