Abstract
The nonlinear optical effect known as sum-frequency generation is used to generate vibrational spectra of molecules adsorbed at interfaces. The characteristics of sum-frequency spectroscopy (SFS) are described and the unique features that make SFS well-suited to the study of the solid-water interface are explained. Examples of sum-frequency spectra of organised molecular systems are presented, with particular emphasis on the effect of interactions with other species in solution. Future developments of relevance to biosensor research are briefly addressed.
Published Version
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