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Synthesis and characterization of multilayered sol-gel based plastic-clad fiber optic pH sensor

机译：基于多层溶胶凝胶的塑料包覆光纤pH传感器的合成与表征

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摘要

The fabrication and characterization of an optical fiber pH sensor for the detection range 3-11 are described. The sensing element consists of a combination of indicators encapsulated in mesoporous surfactant based hybrid matrix, which are deposited onto an uncladed plastic optical fiber. Stable, dense and uniform sol-gel cladding with more than 90% transparency in the visible range are observed. Roughness value 9.7-6.57 nm is obtained by AFM. Film thickness, refractive index, and porosity are found to vary with number of coatings, 70% porosity is determined with 116 nm thickness. The response of the sensor with third layer is observed in acid and basic medium. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：描述了用于检测范围3-11的光纤pH传感器的制造和特性。传感元件由封装在中孔表面活性剂基混合基质中的指示剂组合组成，这些指示剂沉积在未包覆的塑料光纤上。观察到稳定，致密且均匀的溶胶-凝胶熔覆层，在可见光范围内具有超过90％的透明度。通过AFM获得粗糙度值9.7-6.57nm。发现膜厚度，折射率和孔隙率随涂层数量而变化，以116 nm的厚度确定70％的孔隙率。在酸性和碱性介质中观察到传感器对第三层的响应。 （C）2014大韩工业化学工程学会。由Elsevier B.V.发布。保留所有权利。

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