Second Harmonic Generation, a new approach for analyzing the interfacial properties of a short tryptophan-rich peptide

►Characterization of the peptide, KWWKWWK, by using its nonlinear optic properties. ►Combined SHG and surface tension detection of KWWKWWK at the air-water interface. ►KWWKWWK orientation analysis at phospholipid interface by polarized SHG experiments.