This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Integrated Optic Sensor for Spacesuit Atmospheric Quality
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes a novel integrated optic spacesuit atmospheric quality sensor to enhance astronaut safety by monitoring the spacesuit's closed environment. The integrated optic sensor (IOS) is made of self-calibrating miniaturized channel waveguide elements that monitor oxygen concentration in real time. Fabrication employs direct photolithographic writing of channel waveguides onto a photoactive porous glass matrix. The active channel waveguide is doped with an oxygen-sensitive fluorescent indicator. A compact phase fluorometer measures relative fluorescence lifetime -- a direct function of the oxygen partial pressure. In testing, the IOS chip demonstrated a response time of 5 seconds from 0% to 100% oxygen at STP.
Recommended Content
Authors
Topic
Citation
Medoza, E., Khalil, A., Robinson, D., Sorenson, J. et al., "Integrated Optic Sensor for Spacesuit Atmospheric Quality," SAE Technical Paper 961421, 1996, https://doi.org/10.4271/961421.Also In
References
- Reichert, W. M. Newby, K. Andrade, J. D. “Waveguide Evanescent Streak Excitation of Adsorbed Protein Fluorescence,” Transactions of the XI Annual Meeting of the Society for Biomaterials San Antonio, TX 5 11 1985
- Zhou, Y. Laybourn, P. J. Magill, J. V. De La Rue, R. M. “An Evanescent Fluorescence Biosensor Using Ion-Exchanged Buried Waveguides and the Enhancement of Peak Fluorescence,” Biosens. Bioelectron 6 597 607 1991
- De Mavia, L. Vegetti, G. Martinelli, M. “An Optical/Chemical Sensor Based on the Excitation of Surface Plasma,” Informazione Electtronica 18 49 52 1990
- Demas, J.N. DeGraff, B.A. “Design of Transition Metal Complexes as Luminescence Probes,” SPIE Proc. 1172 216 224 1989
- Mendoza, E. A. Gafney, H. D. “Photolithographic Imaging of Planar Optical Waveguides and Integrated Optic Devices onto Porous Silicate Glasses and Silica Sol-Gels,” MRS Proc. Symposium in Optical Waveguide Materials Siegel, H. G. J. Boston, MA Dec. 3-7 1992
- Mendoza, E.A. Ferrel, D. J. Syracuse, S. S. Khalil, A. N. Lieberman, R. A. “Photolithography of Integrated Optic Devices in Sol-Gel Glasses,” SPIE Proc. 2288 580 88 1994
- Wolfbeis, O. S. Fiber Optic Chemical Sensors and Biosensors, Vol. II, Chapter 10: “Oxygen Sensors,” CRC Press 1991