Manipulating shear-induced non-equilibrium transitions in colloidal films by feedback control

dc.contributor.authorVezirov, Tarlan A.
dc.contributor.authorGerloff, Sascha
dc.contributor.authorKlapp, Sabine H. L.
dc.date.accessioned2017-10-25T06:29:19Z
dc.date.available2017-10-25T06:29:19Z
dc.date.issued2015
dc.description.abstractUsing Brownian Dynamics (BD) simulations we investigate non-equilibrium transitions of sheared colloidal films under controlled shear stress sigma(xz). In our approach the shear rate (gamma) over dot is a dynamical variable, which relaxes on a time scale tau(c) such that the instantaneous, configuration-dependent stress sigma(xz)(t) approaches a pre-imposed value. Investigating the dynamics under this "feedback-control" scheme we find unique behavior in regions where the flow curve sigma(xz)((gamma) over dot) of the uncontrolled system is monotonic. However, in non-monotonic regions our method allows to select between dynamical states characterized by different in-plane structure and viscosities. Indeed, the final state strongly depends on tau(c) relative to an intrinsic relaxation time of the uncontrolled system. The critical values of tau(c) are estimated on the basis of a simple model.en
dc.description.sponsorshipDFG, SFB 912, HAEC - Highly Adaptive Energy-Efficient Computingen
dc.identifier.eissn1744-6848
dc.identifier.issn1744-683X
dc.identifier.pmid25407811
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/6981
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-6320
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.subject.ddc530 Physikde
dc.titleManipulating shear-induced non-equilibrium transitions in colloidal films by feedback controlen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/c4sm01414f
dcterms.bibliographicCitation.issue2
dcterms.bibliographicCitation.journaltitleSoft matteren
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryde
dcterms.bibliographicCitation.originalpublisherplaceCambridgede
dcterms.bibliographicCitation.pageend413
dcterms.bibliographicCitation.pagestart406
dcterms.bibliographicCitation.volume11
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Theoretische Physik::FG Computersimulationen und Theorie komplexer Fluidede
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Computersimulationen und Theorie komplexer Fluidede
tub.affiliation.instituteInst. Theoretische Physikde
tub.publisher.universityorinstitutionTechnische Universität Berlin

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