[MOS] February 27, 2007

[Zina Queen]

Seminar on
Modern Optics and Spectroscopy


Dana Dlott,

University of Illinois

Ultrafast vibrational spectroscopy with high time and space resolution

February 27, 2007

12:00 - 1:00 p.m.

Grier Room 34-401



Time resolved vibrational spectroscopy is a well-known method for 
studying molecular
processes.  We don't ordinarily think of this method as having high 
spatial resolution.  However
in experiments using nonlinear, multidimensional and coherent 
vibrational spectroscopies with
molecular nanostructures  where the locations of molecular reporter 
groups are precisely known,
it becomes possible to watch vibrational energy with angstrom spatial 
resolution and femtosecond
time resolution. In fact we have developed the world's thinnest 
thermometer just one atom wide.
A few examples will be discussed:  vibrational energy flow across a 
molecule in a liquid,
vibrational  energy across an interfacial monolayer, and vibrational 
energy down a molecular
chain.
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