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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.9b03617
|2 doi
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|a pubmed24n1019.xml
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|a (DE-627)NLM305723839
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|a (NLM)31975603
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Sprenger, Alexander R
|e verfasserin
|4 aut
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| 245 |
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|a Active Brownian Motion with Orientation-Dependent Motility
|b Theory and Experiments
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 30.11.2020
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|a Date Revised 30.11.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Combining experiments on active colloids, whose propulsion velocity can be controlled via a feedback loop, and the theory of active Brownian motion, we explore the dynamics of an overdamped active particle with a motility that depends explicitly on the particle orientation. In this case, the active particle moves faster when oriented along one direction and slower when oriented along another, leading to anisotropic translational dynamics which is coupled to the particle's rotational diffusion. We propose a basic model of active Brownian motion for orientation-dependent motility. On the basis of this model, we obtain analytical results for the mean trajectories, averaged over the Brownian noise for various initial configurations, and for the mean-square displacements including their non-Gaussian behavior. The theoretical results are found to be in good agreement with the experimental data. Orientation-dependent motility is found to induce significant anisotropy in the particle displacement, mean-square displacement, and non-Gaussian parameter even in the long-time limit. Our findings establish a methodology for engineering complex anisotropic motilities of active Brownian particles, with a potential impact in the study of the swimming behavior of microorganisms subjected to anisotropic driving fields
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
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|a Fernandez-Rodriguez, Miguel Angel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Alvarez, Laura
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Isa, Lucio
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wittkowski, Raphael
|e verfasserin
|4 aut
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| 700 |
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|a Löwen, Hartmut
|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 1992
|g 36(2020), 25 vom: 30. Juni, Seite 7066-7073
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:36
|g year:2020
|g number:25
|g day:30
|g month:06
|g pages:7066-7073
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|u http://dx.doi.org/10.1021/acs.langmuir.9b03617
|3 Volltext
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