کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10410320 | 894432 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of a new evanescent wave optical fibre sensor for methane detection based on cryptophane molecules
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study of a new evanescent wave optical fibre sensor for methane detection based on cryptophane molecules Study of a new evanescent wave optical fibre sensor for methane detection based on cryptophane molecules](/preview/png/10410320.png)
چکیده انگلیسی
An evanescent fibre sensor for detection of methane was fabricated by the inclusion of two types of cryptophane molecules in a transparent polymeric cladding (polysiloxane), deposited on a PCS fibre. Synthesis of crytophanes A and E are described as well as the preparation of the specific polymeric cladding, its deposition on the uncladded part of the optical fibre, the optimal thickness being 5 μm and the optimal length of uncladded part being 5 cm. By modelling the curves P(α)-normalised light power transmitted versus injection angle-it was shown that the specific absorption of methane in cryptophane A led to an increase of the refractive index of the specific cladding. Detection limit for methane is 2% (v/v) with cryptophane A and 6% (v/v) with cryptophane E. When alkane concentrations (methane, ethane, butane) are less than 8% (v/v), only methane leads to an optical response. For concentrations of alkanes higher than 15% (v/v), a strong effect of condensation of butane in the polymer itself is observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 107, Issue 1, 27 May 2005, Pages 32-39
Journal: Sensors and Actuators B: Chemical - Volume 107, Issue 1, 27 May 2005, Pages 32-39
نویسندگان
M. Benounis, N. Jaffrezic-Renault, J.-P. Dutasta, K. Cherif, A. Abdelghani,