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SUMMARY:A molecular perspective of water structure at metal surfaces - Nad
 av Avidor\, SMF Group\, The Cavendish Laboratory
DTSTART:20160225T160000Z
DTEND:20160225T170000Z
UID:TALK62991@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:The molecular properties of water at surfaces have wide import
 ance and\, in recent years\, surface scientists have used single crystal s
 tudies to investigate the structure and self-organisation in thin ice film
 s. Experiments are difficult because the films are easily damaged by conve
 ntional probes such as X-rays and electrons\, and also because those probe
 s are relatively insensitive to the protons in the water. It remains an im
 portant yet challenging topic in surface science. In this talk I will surv
 ey some recent advances in the field\, mainly with respect to structure at
  surfaces and the degree of the order than exists. I will also present som
 e helium atom diffraction studies. In some respects helium atoms are an id
 eal structural probe for water and ice films since there is negligible dam
 age to the surface and the Helium atom is sensitive to the hydrogen atoms 
 in the water. However\, the ice is complicated and highly corrugated\, hen
 ce it is not safe to ignore multiple scattering The talk concludes with a 
 discussion of the possibility of using exact\, multiple scattering calcula
 tions to model the experiment. I will show how they may be used to study t
 he degree of proton ordering in ice Ih surface.
LOCATION:Mott Seminar Room\, Cavendish Laboratory
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