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SUMMARY:Direct Observation of Dynamics within Lipid Membranes\, a (Roughly
 ) 2D System Influenced by Bulk Water in 3D - Prof. Sarah L. Keller\, Unive
 rsity of Washington
DTSTART:20130422T120000Z
DTEND:20130422T130000Z
UID:TALK44830@talks.cam.ac.uk
CONTACT:Aurelia Honerkamp-Smith
DESCRIPTION:Understanding time scales on which a 2D inclusion diffuses acr
 oss a 2D sheet surrounded by 3D bulk water is a complex task – it requir
 es knowledge of a length scale set by a ratio of the 2D viscosity of the\n
 sheet to the 3D viscosity of the bulk.  In our case\, the sheet is a lipid
  membrane and the inclusion is a domain of different lipid composition wit
 hin that membrane.  Understanding the time scales of this system when the 
 membrane is near a miscibility critical point requires knowledge of yet an
 other length scale\, the correlation length of  fluctuations.  By analyzin
 g fluorescence images of lipid membranes through time and by keeping the r
 atio of the 2D membrane viscosity to the 3D bulk viscosity in mind\, we wi
 ll discover the time scales of domain coarsening and of dynamic critical p
 henomena in membranes.\n
LOCATION:MR11\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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