Share Email Print
cover

Proceedings Paper

Development of silicone waveguides for use in a Raman spectroscopy-based sensor for general anesthetics
Author(s): Julie R. Parnell; David Schutte; Paul Yager
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A Raman spectroscopy-based sensor is being developed for general anesthetics or the small organics. The sensor uses a selectively-absorbent polymer to concentrate the analyte and thus produce a higher spectral signal intensity. This helps counteract the inherently low signal characteristic of Raman spectroscopic analyses. Waveguides have been fabricated from a commercially available methacrylate-functional silicone. Using diethoxyacetophenone photoinitiator and a silanizing agent to enhance adhesion, silicone waveguides have been photopolymerized onto fused silica substrates. Linear waveguides 200 micrometers wide and 240 micrometers thick exhibited attenuations on the order of 1.2 dB/cm, as determined by measurements of Raman silicone peak intensity down the length of the waveguide. Studies with liquid deuterochloroform in silicone oil yielded a detection limit of 0.092 MAC, where MAC, or minimum alveolar concentration, is a unit of measure for general anesthetics. Finally, partitioning of gaseous deuterochloroform into these waveguides produced a clearly discernible peak.

Paper Details

Date Published: 16 June 1997
PDF: 10 pages
Proc. SPIE 2976, Biomedical Sensing, Imaging, and Tracking Technologies II, (16 June 1997); doi: 10.1117/12.275536
Show Author Affiliations
Julie R. Parnell, Univ. of Washington (United States)
David Schutte, Univ. of Washington (United States)
Paul Yager, Univ. of Washington (United States)


Published in SPIE Proceedings Vol. 2976:
Biomedical Sensing, Imaging, and Tracking Technologies II
Tuan Vo-Dinh; Robert A. Lieberman; Gerald G. Vurek; Abraham Katzir, Editor(s)

© SPIE. Terms of Use
Back to Top