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DTSTAMP:20260406T042323Z
UID:1729503000@ist.ac.at
DTSTART:20241021T113000
DTEND:20241021T123000
DESCRIPTION:Speaker: CANCELLED: Daniel Bonn\nhosted by Scott Waitukaitis\nA
 bstract: AbstractWe propose a new 'active particle' system in which the pa
 rticles are in fact polymer-like: living worms (Tubifex Tubifex\, or 'slud
 ge worms'). Their level of activity can be controlled by changing the temp
 erature but also by adding small amounts of alcohol to make the worms drun
 k\, which strongly reduces their motion. We then ask the question what the
  difference is between our living polymers and real polymers\, for which t
 he motion is due to thermal fluctuations. Performing classical rheology e
 xperiments on our living entangled polymer system\, we find that the rheol
 ogy is qualitatively similar to that of usual polymers\, but\, quantitativ
 ely their shear thinning is reduced by activity. I will also discuss phase
  separation by entanglement\, and our attempts to perform hydrodynamic chr
 omatography of these wormy polymers. For the latter\, we gently push the w
 orms through a maze\, and find that drunk worms have more difficulty navig
 ating through it: they take much more time to get out of the maze. Author
 sAntoine Deblais\, Tess Heeremans\, Sander Woutersen\, Daniel BonnD.Bonn@u
 va.nl (mailto:D.Bonn@uva.nl)
LOCATION:Raiffeisen Lecture Hall\, ISTA
ORGANIZER:maria.arias.sutil@ista.ac.at
SUMMARY:CANCELLED: Daniel Bonn: CANCELLED: Drunk T. Tubifex Worms: How are 
 active polymers different from real polymers? (IgNobel prize for Chermistr
 y 2024)
URL:https://talks-calendar.ista.ac.at/events/5174
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