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用于光学传感的由沸石纳米颗粒和金属氧化物薄膜构成的蒸汽响应型一维光子晶体。

Vapor responsive one-dimensional photonic crystals from zeolite nanoparticles and metal oxide films for optical sensing.

作者信息

Lazarova Katerina, Awala Hussein, Thomas Sebastien, Vasileva Marina, Mintova Svetlana, Babeva Tsvetanka

机构信息

Institute of Optical Materials and Technologies "Acad. J. Malinowski", Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 109, 1113 Sofia, Bulgaria.

Laboratoire Catalyse & Spectrochimie, Université de Caen, 6, boulevard du Maréchal Juin, 14050 Caen Cedex, France.

出版信息

Sensors (Basel). 2014 Jul 9;14(7):12207-18. doi: 10.3390/s140712207.

DOI:10.3390/s140712207
PMID:25010695
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4168517/
Abstract

The preparation of responsive multilayered structures with quarter-wave design based on layer-by-layer deposition of sol-gel derived Nb(2)O(5) films and spin-coated MEL type zeolite is demonstrated. The refractive indices (n) and thicknesses (d) of the layers are determined using non-linear curve fitting of the measured reflectance spectra. Besides, the surface and cross-sectional features of the multilayered structures are characterized by scanning electron microscopy (SEM). The quasi-omnidirectional photonic band for the multilayered structures is predicted theoretically, and confirmed experimentally by reflectance measurements at oblique incidence with polarized light. The sensing properties of the multilayered structures toward acetone are studied by measuring transmittance spectra prior and after vapor exposure. Furthermore, the potential of the one-dimensional photonic crystals based on the multilayered structure consisting of Nb(2)O(5) and MEL type zeolite as a chemical sensor with optical read-out is discussed.

摘要

展示了基于溶胶 - 凝胶衍生的Nb₂O₅薄膜和旋涂MEL型沸石的逐层沉积制备具有四分之一波长设计的响应性多层结构。使用测量反射光谱的非线性曲线拟合来确定各层的折射率（n）和厚度（d）。此外，通过扫描电子显微镜（SEM）对多层结构的表面和横截面特征进行表征。从理论上预测了多层结构的准全向光子带，并通过斜入射偏振光的反射率测量进行了实验验证。通过测量蒸汽暴露前后的透射光谱来研究多层结构对丙酮的传感特性。此外，还讨论了基于由Nb₂O₅和MEL型沸石组成的多层结构的一维光子晶体作为具有光学读出功能的化学传感器的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/ade0d38f3c70/sensors-14-12207f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2ac75c8ca1cc/sensors-14-12207f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/276b7a8f6a56/sensors-14-12207f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/9a192ec23bdf/sensors-14-12207f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2da7a1223d24/sensors-14-12207f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/a3d420b144ba/sensors-14-12207f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2f4a6e6e8667/sensors-14-12207f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/ade0d38f3c70/sensors-14-12207f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2ac75c8ca1cc/sensors-14-12207f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/276b7a8f6a56/sensors-14-12207f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/9a192ec23bdf/sensors-14-12207f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2da7a1223d24/sensors-14-12207f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/a3d420b144ba/sensors-14-12207f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/2f4a6e6e8667/sensors-14-12207f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2feb/4168517/ade0d38f3c70/sensors-14-12207f7.jpg

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