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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Po Zhang Osborn, D.J. Baker, G.L. Ghosh, R.N. |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Phys. & Astron., Michigan State Univ., East Lansing, MI (Po Zhang) |
| Abstract | A reflection mode optical sensing system for monitoring oxygen in high temperature gas flows, 25-220degC and 500 sccm, is presented. The sensor is based on $^{3}O_{2}$ quenching of the red emission from $K_{2}Mo_{6}Cl_{14},$ one member of a family of hexanuclear molybdenum chloride clusters. One advantage of using inorganic Mo-clusters as the lumophore is the lack of sensitivity to gases typically present in a coal-fired boiler due to the triplet nature of the transition from the excited to ground state. The sensor is prepared by dip-coating fiber tip in a sol-gel solution containing $K_{2}Mo_{6}Cl_{14}$ particle clusters. Drying and aging yields a composite film with $K_{2}Mo_{6}Cl_{14$ immobilized in a porous silica matrix. The composite film deposited on a planar substrate was characterized via in-situ spectroscopic measurement up to 200degC. The emission intensity is constant following 56 cumulative hours of heating at 200degC, demonstrating long-term stability at high temperature |
| Starting Page | 628 |
| Ending Page | 631 |
| File Size | 376508 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780390563 |
| DOI | 10.1109/ICSENS.2005.1597777 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-10-30 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Temperature sensors Oxygen Luminescence Optical reflection Optical sensors Monitoring Fluid flow Gases Boilers Stationary state |
| Content Type | Text |
| Resource Type | Article |
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