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 M3//EN
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CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20211103T142546Z
DTSTART:20211110T130000Z
DTEND:20211110T140000Z
SUMMARY:Characterising adlayers of surfactants using nonlinear optics – V
 ibrational sum-frequency spectroscopy
UID:{http://www.columbasystems.com/customers/uom/gpp/eventid/}er1-kvjm4cy
 i-ebhtdj
DESCRIPTION:Join us for this PSI seminar with guest speaker Dr. Michael D
 owhyj. Corrosion and subsequent structural degradation is a significant 
 and ubiquitous problem\, and the cost due to corrosion (from both damage
  to structures and efforts to mitigate corrosion) has been estimated at 
 3.4% of the world’s GDP per year. A common means to mitigate corrosion p
 rocesses involves employing chemical additives known as Corrosion Inhibi
 tors (Cis)\, which slow down the overall rates of corrosion by adhering 
 to metallic surfaces\, without modifying the chemistry of bulk phases. T
 he precise mechanisms by which Cis function however\, remains largely un
 known\, and the selection process for identifying candidate Cis is predo
 minantly through trial-and-error. Much work has been done towards elucid
 ating the performance of adlayers of Cis\, although the majority of spec
 troscopic studies of the precise chemistry have taken place in UHV\, whi
 ch are far removed from the conditions in which these molecules function
 . In this work\, a novel interface-specific spectroscopic tool\, Vibrati
 onal Sum-Frequency Spectroscopy (or VSFS)\, is employed in order to take
  this further. VSFS is based on a second-order nonlinear optical process
  (sum frequency generation)\, which\, can only occur in media with an in
 herent dipole asymmetry. The practical upshot of this\, results in VSFS 
 being effectively blind to contributions from bulk phases (helpfully inc
 luding corrosive fluids)\, helping us paint a realistic picture of the i
 nterfacial chemistry and geometry of adlayers of Cis\, whilst they are f
 unctioning and inhibiting corrosion.\n\n\nThis event will be taking plac
 e online and furthers details about the event and how to join will be ma
 de available shortly.
STATUS:TENTATIVE
TRANSP:TRANSPARENT
CLASS:PUBLIC
LOCATION:This event will take place online
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