Title and Abstract for the talk
Title:
Structure and Dynamics of Molecular Surfaces and Interfaces: Recent Developments
and New Opportunities with Nonlinear Vibrational Spectroscopy
Hongfei Wang
Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National
Laboratory, Richland, WA 99352
Abstract:
There have been many applications of surface nonlinear vibrational spectroscopy, i.e.
sum-frequency generation vibrational spectroscopy (SFG-VS), in obtaining chemical
structure and bonding, as well as dynamic interactions, of molecular surfaces/interfaces.
The potential of SFG-VS in studies of complex molecular systems at surfaces/interfaces
can be greatly expanded with the recent development of the high-resolution broadband
sum-frequency generation vibrational spectroscopy (HR-BB-SFG-VS, which was realized
by combining the infrared and visible pulses at the time and frequency resolution limit,
as it allows measurement of the nearly intrinsic lineshape of the SFG vibrational spectra.
In this talk, the principle and concept of the SFG lineshape, phase and polarization, the
three flavors that make SFG-VS a unique quantitative spectroscopic tool for
surface/interface and spectroscopic studies, shall be demonstrate with a set of
examples, with liquid, catalytic and chiral surfaces, etc.