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SUMMARY:Surface Physics of Soft Materials
DTSTART:20251128T141500
DTEND:20251128T151500
DTSTAMP:20260921T191032Z
UID:ab2407d4360778cb0d30e18f810f854e4487dadb9e6f0df5f130c908
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Angela Pitenis\, UCSB.  Angela Pitenis is an associate 
 professor in the Materials Department at the University of California\, Sa
 nta Barbara. Her research group investigates the fundamental mechanisms of
  friction\, deformation\, and adhesion in soft\, biological\, and bioinspi
 red materials. \nHydrogels are three-dimensional networks of hydrophilic 
 polymers swollen in solvent with tissue-like elastic moduli (about 1 to 10
 0 kPa). High water content hydrogels (>90% water) are often described as 
 “slippery\,” yet their lubrication mechanisms remain unclear. Inspired
  by work from Spencer\, Tran\, Creton\, and others\, we designed a frictio
 n-measuring sample environment (“tribometer”) on the Liquids Reflectom
 eter at Oak Ridge National Laboratory’s Spallation Neutron Source to qua
 ntify polymer density at hydrogel surfaces during compression and sliding.
  Early results suggest that interfacial polymer density increases with con
 tact pressure and sliding velocity\, providing new physical insights to gu
 ide design of robust\, lubricious materials and coatings for biomedical ap
 plications.
LOCATION:CM 1 3 https://plan.epfl.ch/?room==CM%201%203 https://epfl.zoom.u
 s/j/64067979202
STATUS:CONFIRMED
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