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UID:DSC-15855
DTSTART;TZID=Europe/Berlin:20190403T111000
SEQUENCE:1554108258
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20190403T121000
URL:https://www.dresden-science-calendar.de/calendar/en/detail/15855
LOCATION:TUD Chemie - Neubau\, Bergstraße 6601069 Dresden
SUMMARY:Cottin-Bizonne: Dynamics of Active Colloids
CLASS:PUBLIC
DESCRIPTION:Speaker: Cecile Cottin-Bizonne \nInstitute of Speaker: iLM Lyon
 \nTopics:\nBiologie\, Physik\, Mathematik\, Chemie\n Location:\n  Name: TU
 D Chemie - Neubau (CHE 182)\n  Street: Bergstraße 66\n  City: 01069 Dresd
 en\n  Phone: \n  Fax: \nDescription: The behavior of self-propelled partic
 les\, that are intrinsically out    of equilibrium\, is rather fascinating
  and opens new questions. Here we    study experimentally the dynamics of 
 active colloids: from the    behavior at low density up to crowded conditi
 ons.  Our system is a    monolayer of micron-size gold-platinum Janus part
 icles in water. Upon    addition of hydrogen peroxide\, the colloids becom
 e self-propelled due    to the different chemical gradient on both sides. 
 If at low density    they behave as perfect hot gas\, at intermediate dens
 ities we observe a    new collective phenomena: the formation of clusters.
  Measuring the    aggregation and fragmentation rates we have rationalized
  the cluster    size distribution and fluctuations.  In the dense regime\,
  we notice an    unexpected non-monotonic behavior as the activity level r
 ises up.
DTSTAMP:20260723T051533Z
CREATED:20190401T084418Z
LAST-MODIFIED:20190401T084418Z
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