Preparation and application of a novel chemical sensor based on mode-filtered light detection

Wang, Kemin; Zhou, Lili; Mao, Donglin; Yang, Xiaohaio; Luo, Kan

doi:10.1016/s0925-4005(99)00459-1

Cited by 6 publications

(3 citation statements)

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“…Our experimental results also demonstrated a reasonable correlation between the theory and the experiments. The work helps to substantially understand the mechanism of MFLD and lays a solid foundation for the future development of multi-functional FOCS [20][21][22]. The current sensor design can provide high S/N ratio and possesses the advantages of quick response, good reproducibility and reversibility.…”

Section: Introductionmentioning

confidence: 95%

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A fibre-optic mode-filtered light sensor for general and fast chemical assay

Zhou¹,

Wang²,

Choi³

et al. 2003

Meas. Sci. Technol.

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A simple and fast-response fibre-optic chemical sensor based on mode-filtered light detection (MFLD) has been successfully developed. The sensor was constructed by inserting an unmodified fibre core into a silica capillary tubing; a charge-coupled device which acted as a multi-channel detector was positioned alongside the capillary to detect the emanated mode-filtered light. An interesting finding was observed: there was an increase in the signal upon the decrease in the sample refractive index when an unclad optical fibre was employed, which was different from the results of a polymer-clad fibre reported previously. This phenomenon of opposite signal trend can clearly be interpreted by applying a mathematical derivation based on light propagation in the optical fibre. The derived mathematical model correlates well with the experimental results. It also provides a good theoretical foundation for the future development of MFLD-based analyser in conjunction with liquid chromatographic separation and assay. The proposed MFLD sensor was successfully applied to determine acetic acid with a linear response in the range 0-90 v/v% and a correlation coefficient of 0.9959. The sensor has the advantages of high S/N ratio and very fast response time. It offers the potential for use as a general sensor in food and chemical industries.

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Section: Introductionmentioning

confidence: 95%

“…In this work, a CCD was utilized as a multi-channel array detector and was positioned alongside the fibre for recording MFLD from the whole vicinity of the chromatographic column. The sensor has been proved to have potential in multi-channel detection synchronized with separation and assay [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A fibre-optic mode-filtered light sensor for general and fast chemical assay

Zhou¹,

Wang²,

Choi³

et al. 2003

Meas. Sci. Technol.

Self Cite

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show abstract

“…Comparatively, this type of sensors substantially increases the S/N. Since the inception of this sensing technique, it has been widely applied to various liquid samples, such as aromatic and chlorinated hydrocarbons [7][8][9][10], ethanol [11,12], glucose and glycerol [13], acetic acid [14], and amino acids [15,16]. So far, only a few gas samples were studied at steady-state concentrations by heated annular column [9].…”

Section: Introductionmentioning

confidence: 99%