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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(01) [January 2005] >
| Title: | Sol-gel processed TiO2 films on U-shaped glass-rods as optical humidity sensor |
| Authors: | Yadav, B C
Shukla, R K
Bali, L M |
| Keywords: | Humidity sensors
Thick film
Sol-gel process |
| Issue Date: | Jan-2005 |
| Publisher: | CSIR |
| IPC Code: | G06K 7/10 |
| Abstract: | The fabrication and
characterization of a thick-film optical humidity sensor based on the
semiconducting metal-oxide TiO2 have been described. The
sensor element consists of a thin U-shaped borosil glass-rod having different
curvature with a film of TiO2 deposited on it. The films prepared
are dried and annealed at 600o C for two hours, which make them rutile, porous and very sensitive
to humidity. Both the ends of the U-shaped glass-rods are coupled to optical
fibers. Light from a He-Ne laser is launched in to the sensing element through
one of them. Light received from the other fibre is fed into an optical power
meter. Variations in the intensity of light with changes in humidity from 5% to
95% have been recorded. |
| Page(s): | 51-55 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(01) [January 2005]
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