Abstract
An experiment was designed to measure sum-frequency generation (SFG) spectra in both reflection and transmission. The result from an octadecyltrichlorosilane monolayer on a substrate reveals that while the resonant spectra in the two geometries both originate from the surface monolayer, the bulk substrate has a significant contribution to the nonresonant background in the transmitted spectra. Study of a polyethylene film also shows that the bulk contribution to the SFG spectra is only significant for the transmission geometry, exhibiting a resonant mode not observable in the reflected spectra.
| Original language | English |
|---|---|
| Pages (from-to) | 3349-3354 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry B |
| Volume | 104 |
| Issue number | 14 |
| Publication status | Published - 2000 Apr 13 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry