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  Self-propelled droplets.

Seemann, R., Fleury, J.-B., & Maass, C. C. (2016). Self-propelled droplets. European Physical Journal Special Topics, 225(11-12), 2227-2240. doi:10.1140/epjst/e2016-60061-7.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-B676-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-4061-D
Genre: Journal Article

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 Creators:
Seemann, Ralf1, Author              
Fleury, Jean-Baptiste, Author              
Maass, Corinna C.2, Author              
Affiliations:
1Group Geometry of Fluid Interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063311              
2Group Active soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063307              

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 Abstract: Self-propelled droplets are a special kind of self-propelled matter that are easily fabricated by standard microfluidic tools and locomote for a certain time without external sources of energy. The typical driving mechanism is a Marangoni flow due to gradients in the interfacial energy on the droplet interface. In this article we review the hydrodynamic prerequisites for self-sustained locomotion and present two examples to realize those conditions for emulsion droplets, i.e. droplets stabilized by a surfactant layer in a surrounding immiscible liquid. One possibility to achieve self-propelled motion relies on chemical reactions affecting the surface active properties of the surfactant molecules. The other relies on micellar solubilization of the droplet phase into the surrounding liquid phase. Remarkable cruising ranges can be achieved in both cases and the relative insensitivity to their own ’exhausts’ allows to additionally study collective phenomena.

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Language(s): eng - English
 Dates: 2016-11-102016
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1140/epjst/e2016-60061-7
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Title: European Physical Journal Special Topics
Source Genre: Journal
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Pages: - Volume / Issue: 225 (11-12) Sequence Number: - Start / End Page: 2227 - 2240 Identifier: ISSN: 1951-6355