Abstract
Attenuated total reflection (ATR) spectrometry of aqueous solutions in contact with polystyrene Integrated optical waveguides has been investigated. The mode-dependent absorption of evanescent energy by fluorescein solutions adjacent to the waveguide surface was measured and compared to theoretical predictions based on a ray optics approach. Although enhanced sensitivity was observed with increasing mode number, the sensitivity for the highest order mode was less than that predicted by theory.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2251-2256 |
| Number of pages | 6 |
| Journal | Analytical chemistry |
| Volume | 62 |
| Issue number | 20 |
| DOIs | |
| State | Published - Jan 15 1990 |
ASJC Scopus subject areas
- Analytical Chemistry
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Saavedra, S. S., & Reichert, W. M. (1990). Integrated Optical Attenuated Total Reflection Spectrometry of Aqueous Superstrates Using Prism-Coupled Polymer Waveguides. Analytical chemistry, 62(20), 2251-2256. https://doi.org/10.1021/ac00219a019