Kree, Reiner

[["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","The European Physical Journal E"],["dc.bibliographiccitation.volume","41"],["dc.contributor.author","Kree, R."],["dc.contributor.author","Zippelius, A."],["dc.date.accessioned","2020-12-10T18:37:33Z"],["dc.date.available","2020-12-10T18:37:33Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1140/epje/i2018-11729-1"],["dc.identifier.eissn","1292-895X"],["dc.identifier.issn","1292-8941"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77007"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Self-propulsion of droplets driven by an active permeating gel"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Physical Review Fluids"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Kree, Reiner"],["dc.contributor.author","Zippelius, Annette"],["dc.date.accessioned","2020-12-10T18:25:39Z"],["dc.date.available","2020-12-10T18:25:39Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1103/PhysRevFluids.4.113102"],["dc.identifier.eissn","2469-990X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75777"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Chaos and mixing in self-propelled droplets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Physical Review Fluids"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Kree, R."],["dc.contributor.author","Rückert, L."],["dc.contributor.author","Zippelius, A."],["dc.date.accessioned","2021-04-14T08:28:24Z"],["dc.date.available","2021-04-14T08:28:24Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1103/PhysRevFluids.6.034201"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82595"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2469-990X"],["dc.title","Dynamics of a droplet driven by an internal active device"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","15"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The European Physical Journal. E, Soft Matter"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Kree, R."],["dc.contributor.author","Zippelius, Annette"],["dc.date.accessioned","2022-04-01T10:03:16Z"],["dc.date.available","2022-04-01T10:03:16Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract We have analyzed the dynamics of a spherical, uniaxial squirmer which is located inside a spherical liquid drop at general position 1487911\\varvec{r}_s1487911 r s . The squirmer is subject to an external force and torque in addition to the slip velocity on its surface. We have derived exact analytical expressions for the linear and rotational velocity of the squirmer as well as the linear velocity of the drop for general, non-axisymmetric configurations. The mobilities of both, squirmer and drop, are in general anisotropic, depending on the orientation of 1487911\\varvec{r}_s1487911 r s , relative to squirmer axis, external force or torque. We discuss their dependence on the size of the squirmer, its distance from the center of the drop and the viscosities. Our results provide a framework for the discussion of the trajectories of the composite system of drop and enclosed squirmer. Graphical Abstract"],["dc.description.sponsorship","Georg-August-Universität Göttingen"],["dc.identifier.doi","10.1140/epje/s10189-022-00169-3"],["dc.identifier.pii","169"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/106129"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1292-895X"],["dc.relation.issn","1292-8941"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Mobilities of a drop and an encapsulated squirmer"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","595"],["dc.bibliographiccitation.journal","Journal of Fluid Mechanics"],["dc.bibliographiccitation.lastpage","623"],["dc.bibliographiccitation.volume","821"],["dc.contributor.author","Kree, Reiner"],["dc.contributor.author","Burada, P. S."],["dc.contributor.author","Zippelius, Annette"],["dc.date.accessioned","2018-11-07T10:22:59Z"],["dc.date.available","2018-11-07T10:22:59Z"],["dc.date.issued","2017"],["dc.description.abstract","We study the self-propulsion of spherical droplets as simplified hydrodynamic models of swimming micro-organisms or artificial micro-swimmers. In contrast to approaches that start from active velocity fields produced by the system, we consider active interface tractions, body force densities and active stresses as the origin of autonomous swimming. For negligible Reynolds number and given activity, we compute the external and internal flow fields as well as the centre of mass velocity and angular velocity of the droplet at fixed time. To construct trajectories from single time snapshots, the evolution of active forces or stresses must be determined in the laboratory frame. Here, we consider the case of active matter, which is carried by a continuously distributed rigid but sparse (cyto)-skeleton that is immersed in the droplet interior. We calculate examples of trajectories of a droplet and its skeleton from force densities or stresses, which may be explicitly time-dependent in a frame fixed within the skeleton."],["dc.identifier.doi","10.1017/jfm.2017.244"],["dc.identifier.isi","000403088200014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42375"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Cambridge Univ Press"],["dc.relation.issn","1469-7645"],["dc.relation.issn","0022-1120"],["dc.title","From active stresses and forces to self-propulsion of droplets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The European Physical Journal E"],["dc.bibliographiccitation.volume","44"],["dc.contributor.author","Kree, R."],["dc.contributor.author","Zippelius, A."],["dc.date.accessioned","2021-04-14T08:29:58Z"],["dc.date.available","2021-04-14T08:29:58Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1140/epje/s10189-021-00018-9"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83057"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1292-895X"],["dc.relation.issn","1292-8941"],["dc.title","Controlled locomotion of a droplet propelled by an encapsulated squirmer"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]