On the optical sensing means for the study of chemical kinetics

Pankaj Kumar Choudhury, Toshihiko Yoshino

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A proposal is made of the use of fibre optic sensors for chemical sensing where the measurements of rate coefficients of time-dependent chemical reactions are performed. When an optical fibre is bent and a part of its cladding is stripped off, the sensitivity of the system improves because of the higher penetration depth achieved in this case. The sensor works on the principle of evanescent wave absorption spectroscopy. The rate constant of a chemical reaction is determined using this principle, and the validity of the result is confirmed by comparing it with that obtained by a spectrophotometer. Comparison is made between the results obtained using bent as well as straight probes, and it is noticed that the system incorporating the former gives results closer to those obtained by spectroscopic measurements, which is essentially because of the improved sensitivity of the system.

Original languageEnglish
Pages (from-to)1793-1797
Number of pages5
JournalMeasurement Science and Technology
Volume13
Issue number11
DOIs
Publication statusPublished - Nov 2002
Externally publishedYes

Fingerprint

Optical Sensing
Chemical Kinetics
Reaction kinetics
Chemical reactions
chemical reactions
reaction kinetics
Chemical Reaction
sensitivity
sensors
Spectrophotometers
evanescent waves
Fiber optic sensors
spectrophotometers
Absorption spectroscopy
proposals
Optical fibers
Evanescent Wave
fiber optics
Rate constants
absorption spectroscopy

Keywords

  • Chemical sensors
  • Evanescent wave absorption
  • Fibre optic sensors

ASJC Scopus subject areas

  • Polymers and Plastics
  • Ceramics and Composites
  • Materials Science (miscellaneous)

Cite this

On the optical sensing means for the study of chemical kinetics. / Choudhury, Pankaj Kumar; Yoshino, Toshihiko.

In: Measurement Science and Technology, Vol. 13, No. 11, 11.2002, p. 1793-1797.

Research output: Contribution to journalArticle

@article{3ef2d6eaba4244c18394b02581f6f930,
title = "On the optical sensing means for the study of chemical kinetics",
abstract = "A proposal is made of the use of fibre optic sensors for chemical sensing where the measurements of rate coefficients of time-dependent chemical reactions are performed. When an optical fibre is bent and a part of its cladding is stripped off, the sensitivity of the system improves because of the higher penetration depth achieved in this case. The sensor works on the principle of evanescent wave absorption spectroscopy. The rate constant of a chemical reaction is determined using this principle, and the validity of the result is confirmed by comparing it with that obtained by a spectrophotometer. Comparison is made between the results obtained using bent as well as straight probes, and it is noticed that the system incorporating the former gives results closer to those obtained by spectroscopic measurements, which is essentially because of the improved sensitivity of the system.",
keywords = "Chemical sensors, Evanescent wave absorption, Fibre optic sensors",
author = "Choudhury, {Pankaj Kumar} and Toshihiko Yoshino",
year = "2002",
month = "11",
doi = "10.1088/0957-0233/13/11/316",
language = "English",
volume = "13",
pages = "1793--1797",
journal = "Measurement Science and Technology",
issn = "0957-0233",
publisher = "IOP Publishing Ltd.",
number = "11",

}

TY - JOUR

T1 - On the optical sensing means for the study of chemical kinetics

AU - Choudhury, Pankaj Kumar

AU - Yoshino, Toshihiko

PY - 2002/11

Y1 - 2002/11

N2 - A proposal is made of the use of fibre optic sensors for chemical sensing where the measurements of rate coefficients of time-dependent chemical reactions are performed. When an optical fibre is bent and a part of its cladding is stripped off, the sensitivity of the system improves because of the higher penetration depth achieved in this case. The sensor works on the principle of evanescent wave absorption spectroscopy. The rate constant of a chemical reaction is determined using this principle, and the validity of the result is confirmed by comparing it with that obtained by a spectrophotometer. Comparison is made between the results obtained using bent as well as straight probes, and it is noticed that the system incorporating the former gives results closer to those obtained by spectroscopic measurements, which is essentially because of the improved sensitivity of the system.

AB - A proposal is made of the use of fibre optic sensors for chemical sensing where the measurements of rate coefficients of time-dependent chemical reactions are performed. When an optical fibre is bent and a part of its cladding is stripped off, the sensitivity of the system improves because of the higher penetration depth achieved in this case. The sensor works on the principle of evanescent wave absorption spectroscopy. The rate constant of a chemical reaction is determined using this principle, and the validity of the result is confirmed by comparing it with that obtained by a spectrophotometer. Comparison is made between the results obtained using bent as well as straight probes, and it is noticed that the system incorporating the former gives results closer to those obtained by spectroscopic measurements, which is essentially because of the improved sensitivity of the system.

KW - Chemical sensors

KW - Evanescent wave absorption

KW - Fibre optic sensors

UR - http://www.scopus.com/inward/record.url?scp=0036881220&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036881220&partnerID=8YFLogxK

U2 - 10.1088/0957-0233/13/11/316

DO - 10.1088/0957-0233/13/11/316

M3 - Article

VL - 13

SP - 1793

EP - 1797

JO - Measurement Science and Technology

JF - Measurement Science and Technology

SN - 0957-0233

IS - 11

ER -