title: Examining surface and bulk structures using combined nonlinear vibrational spectroscopies.
abstract: We combined sum-frequency generation (SFG) vibrational spectroscopy with coherent anti-Stokes Raman scattering (CARS) spectroscopy in one system to examine both surface and bulk structures of materials with the same geometry and without the need to move the sample. Poly(methyl methacrylate) (PMMA) and polystyrene (PS) thin films were tested before and after plasma treatment. The sensitivities of SFG and CARS were tested by varying polymer film thickness and using a lipid monolayer.
authors.affiliation: Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA. zhangchi@umich.edu
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.forename: Alexander
authors.initials: A
authors.lastname: Khmaladze
authors.forename: Yuwei
authors.initials: Y
authors.lastname: Liu
authors.forename: Bei
authors.initials: B
authors.lastname: Ding
authors.forename: Joshua
authors.initials: J
authors.lastname: Jasensky
authors.forename: Zhan
authors.initials: Z
authors.lastname: Chen