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SUMMARY:"Fundamental BioPhotonics" - Sylvie Roke  École Polytechnique Fé
 dérale de Lausanne (EPFL) Institute of Bio-engineering (IBI)\, School of 
 Engineering (STI)\, CH-1015 Lausanne\, Switzerland
DTSTART:20130228T110000Z
DTEND:20130228T120000Z
UID:TALK43826@talks.cam.ac.uk
CONTACT:Leona Hope-Coles
DESCRIPTION:Life occurs in three dimensional turbid aqueous systems. A cel
 l consists for ~60 % of water and contains many organels and interfaces. T
 he average distance between two molecules\, or a molecule and a membrane i
 nterfaces is approximately 1 nm. Water and the interfaces it interacts wit
 h are of paramount importance for biological processes. The molecular\, st
 ructural\, dynamic\, and biological properties of water\, aqueous systems 
 and aqueous interfaces are essential in understanding the complexity of li
 fe\, and our ability to harness its features for novel (nano)technologies.
  Currently\, our understanding of such soft wet and turbid biological syst
 ems is mostly derived from macro- or microscopic theories. Molecular level
  understanding is often absent. \nIn this presentation I will introduce no
 nlinear optical methods that can be used to gain label-free molecular leve
 l information about liquid aqueous systems and nanoscopic interfaces in tu
 rbid media. We have used nonlinear light scattering methods to understand 
 the origin of the intrinsic charge on nanoscopic hydrophobic / water inter
 faces. I will also discuss the molecular level stabilization mechanism of 
 nanodroplets\, which differs significantly from the apparent mechanism for
  stabilizing macroscopic interfaces.\n
LOCATION:Pippard Lecture Theatre\, Cavendish Laboratory\, Department of Ph
 ysics
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