Propagating density spikes in light-powered motility-ratchets

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LOZANO, Celia, Benno LIEBCHEN, Borge TEN HAGEN, Clemens BECHINGER, Hartmut LÖWEN, 2019. Propagating density spikes in light-powered motility-ratchets. In: Soft Matter. 15(26), pp. 5185-5192. ISSN 1744-683X. eISSN 1744-6848. Available under: doi: 10.1039/c9sm00727j

@article{Lozano2019-07-03Propa-46018, title={Propagating density spikes in light-powered motility-ratchets}, year={2019}, doi={10.1039/c9sm00727j}, number={26}, volume={15}, issn={1744-683X}, journal={Soft Matter}, pages={5185--5192}, author={Lozano, Celia and Liebchen, Benno and ten Hagen, Borge and Bechinger, Clemens and Löwen, Hartmut} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:language>eng</dc:language> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Löwen, Hartmut</dc:contributor> <dc:contributor>Lozano, Celia</dc:contributor> <dcterms:issued>2019-07-03</dcterms:issued> <dcterms:isPartOf rdf:resource=""/> <dspace:isPartOfCollection rdf:resource=""/> <dc:creator>Liebchen, Benno</dc:creator> <dcterms:abstract xml:lang="eng">Combining experiments and computer simulations, we use a spatially periodic and flashing light-field to direct the motion of phototactic active colloids. Here, the colloids self-organize into a density spike pattern, which resembles a shock wave and propagates over long distances, almost without dispersing. The underlying mechanism involves a synchronization of the colloids with the light-field, so that particles see the same intensity gradient each time the light-pattern is switched on, but no gradient in between (for example). This creates pulsating transport whose strength and direction can be controlled via the flashing protocol and the self-propulsion speed of the colloids. Our results might be useful for drug delivery applications and can be used to segregate active colloids by their speed.</dcterms:abstract> <dcterms:available rdf:datatype="">2019-06-14T13:43:15Z</dcterms:available> <dc:creator>Bechinger, Clemens</dc:creator> <dc:creator>ten Hagen, Borge</dc:creator> <dc:contributor>Liebchen, Benno</dc:contributor> <bibo:uri rdf:resource=""/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:contributor>ten Hagen, Borge</dc:contributor> <dc:creator>Lozano, Celia</dc:creator> <dc:contributor>Bechinger, Clemens</dc:contributor> <dc:creator>Löwen, Hartmut</dc:creator> <dcterms:title>Propagating density spikes in light-powered motility-ratchets</dcterms:title> <dc:date rdf:datatype="">2019-06-14T13:43:15Z</dc:date> </rdf:Description> </rdf:RDF>

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