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UID:DSC-13697
DTSTART;TZID=Europe/Berlin:20171102T150000
SEQUENCE:1509608896
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20171102T153000
URL:https://dresden-science-calendar.de/calendar/de/detail/13697
LOCATION:MPI-PKS\, Nöthnitzer Straße 3801187 Dresden
SUMMARY:Alaimo: Curvature controlled defect dynamics in topological active 
 nematics
CLASS:PUBLIC
DESCRIPTION:Speaker: Francesco Alaimo\nInstitute of Speaker: TUD\nTopics:\n
 Physik\n Location:\n  Name: MPI-PKS (Seminarroom 4)\n  Street: Nöthnitzer
  Straße 38\n  City: 01187 Dresden\n  Phone: + 49 (0)351 871 0\n  Fax: \nD
 escription: We study the spatiotemporal patterns that emerge when an activ
 e nematic film is topologically constraint. These topological constraints 
 allow to control the non-equilibrium dynamics of the active system. We con
 sider ellipsoidal shapes for which the resulting defects are 1/2 disclinat
 ions and analyze the relation between their location and dynamics and loca
 l geometric properties of the ellipsoid. We highlight two dynamic modes: a
  tunable periodic state that oscillates between two defect configurations 
 on a spherical shape and a tunable rotating state for oblate spheroids. We
  further demonstrate the relation between defects and high Gaussian curvat
 ure and umbilical points and point out limits for a coarse-grained descrip
 tion of defects as self-propelled particles.
DTSTAMP:20260421T125037Z
CREATED:20171102T074816Z
LAST-MODIFIED:20171102T074816Z
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