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SUMMARY:Colloidal Dispersions in External Fields - Professor Stefan Egelha
 af\, Heinrich-Heine-University\, Düsseldorf\, Germany
DTSTART:20121102T140000Z
DTEND:20121102T150000Z
UID:TALK40399@talks.cam.ac.uk
CONTACT:Tracy Inman
DESCRIPTION:A characteristic feature of colloidal particles is their Brown
 ian motion. An individual colloidal particle explores space with its mean-
 squared displacement increasing linearly with time. However\, much more co
 mplex dynamics are displayed by interacting particles and particles in ext
 ernal fields. Since colloidal systems are governed by thermal energy\, eve
 n small inter-particle interactions or modest external potentials can sign
 ificantly modify their dynamics (and structure).\nI will briefly mention a
 n effect of inter-particle interactions\, but mainly discuss the dynamics 
 of colloidal particles in external potentials. This will include the respo
 nse of colloidal particles to different external potentials: gravity\, mec
 hanical forces (shear) and optical forces. \n
LOCATION:Small Lecture Theatre\, Cavendish Laboratory
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