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Titolo:
A sensitive fibre optic pH sensor using multiple sol-gel coatings
Autore:
Lee, ST; Gin, J; Nampoori, VPN; Vallabhan, CPG; Unnikrishnan, NV; Radhakrishnan, P;
Indirizzi:
Cochin Univ Sci & Technol, Int Sch Photon, Cochin 682022, Kerala, India Cochin Univ Sci & Technol Cochin Kerala India 682022 82022, Kerala, India Mahatma Gandhi Univ, Sch Pure & Appl Phys, Priyadarsini Hills, India Mahatma Gandhi Univ Priyadarsini Hills India Priyadarsini Hills, India
Titolo Testata:
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
fascicolo: 5, volume: 3, anno: 2001,
pagine: 355 - 359
SICI:
1464-4258(200109)3:5<355:ASFOPS>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVANESCENT-WAVE ABSORPTION; IMMOBILIZATION TECHNIQUE; FIBER;
Keywords:
fibre optics; optical fibre; evanescent wave; sensor; pH; sol-gel; absorption; multi-layer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, ST Cochin Univ Sci & Technol, Int Sch Photon, Cochin 682022, Kerala, India Cochin Univ Sci & Technol Cochin Kerala India 682022 erala, India
Citazione:
S.T. Lee et al., "A sensitive fibre optic pH sensor using multiple sol-gel coatings", J OPT A-P A, 3(5), 2001, pp. 355-359

Abstract

The fabrication and characterization of a fibre optic pH sensor based on evanescent wave absorption is presented. The unclad portion of a multi-mode optical fibre is coated with a pH sensitive dye, which is immobilized by the sol-gel route. The sensitivity of the device has been found to increase when multiple sol-gel coatings are used as the sensing region. The dynamic range and the temporal response of the sensor are investigated for two different dyes, namely bromocresol purple and bromocresol green. The performanceof the device is evaluated in terms of the results obtained during actual measurements.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 16:30:53