Design of pH Sensors in Long-Period Fiber Gratings Using Polymeric Nanocoatings
In this paper, two different pH sensors based on the deposition of nanometric scale polymeric films onto the surface of a long-period fiber grating (LPFG) have been studied and compared. An electrostatic self-assembled (ESA) method has been used to create sensitive films with an optimal overlay thic...
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| Veröffentlicht in: | IEEE sensors journal 2007-03, Vol.7 (3), p.455-463 |
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| creator | Corres, J.M. Matias, I.R. del Villar, I. Arregui, F.J. |
| description | In this paper, two different pH sensors based on the deposition of nanometric scale polymeric films onto the surface of a long-period fiber grating (LPFG) have been studied and compared. An electrostatic self-assembled (ESA) method has been used to create sensitive films with an optimal overlay thickness. Two types of sensors have been designed: The first one is based on polyallylamine hydrochloride (PAH), polyacrylic acid (PAA), and the second one was done incorporating the pigment Prussian blue (PB) in the PAH/PAA matrix. A theoretical model of multilayer cylindrical waveguides based on coupled-mode theory has been used to predict the position of the attenuation bands as a function of the overlay thickness. Both sensors were tested and compared in terms of sensitivity and response time. A faster response was obtained with the introduction of PB particles in the polymeric matrix. Linear sensors in the pH range 4-7 were obtained, showing good repeatability and high sensitivity |
| doi_str_mv | 10.1109/JSEN.2007.891933 |
| format | Article |
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An electrostatic self-assembled (ESA) method has been used to create sensitive films with an optimal overlay thickness. Two types of sensors have been designed: The first one is based on polyallylamine hydrochloride (PAH), polyacrylic acid (PAA), and the second one was done incorporating the pigment Prussian blue (PB) in the PAH/PAA matrix. A theoretical model of multilayer cylindrical waveguides based on coupled-mode theory has been used to predict the position of the attenuation bands as a function of the overlay thickness. Both sensors were tested and compared in terms of sensitivity and response time. A faster response was obtained with the introduction of PB particles in the polymeric matrix. 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An electrostatic self-assembled (ESA) method has been used to create sensitive films with an optimal overlay thickness. Two types of sensors have been designed: The first one is based on polyallylamine hydrochloride (PAH), polyacrylic acid (PAA), and the second one was done incorporating the pigment Prussian blue (PB) in the PAH/PAA matrix. A theoretical model of multilayer cylindrical waveguides based on coupled-mode theory has been used to predict the position of the attenuation bands as a function of the overlay thickness. Both sensors were tested and compared in terms of sensitivity and response time. A faster response was obtained with the introduction of PB particles in the polymeric matrix. Linear sensors in the pH range 4-7 were obtained, showing good repeatability and high sensitivity</description><subject>Coupled-mode analysis</subject><subject>electrostatic self-assembly (ESA)</subject><subject>Electrostatics</subject><subject>Fiber gratings</subject><subject>Fibers</subject><subject>long-period fiber gratings</subject><subject>Mathematical models</subject><subject>Nanomaterials</subject><subject>nanophotonics</subject><subject>Nanostructure</subject><subject>nanostructured materials</subject><subject>Nonhomogeneous media</subject><subject>Optical fiber sensors</subject><subject>pH sensor</subject><subject>Pigmentation</subject><subject>Polyallylamine hydrochloride</subject><subject>Polymer films</subject><subject>Predictive models</subject><subject>Self-assembly</subject><subject>Sensors</subject><subject>Studies</subject><subject>Transmission line matrix methods</subject><subject>Waveguide theory</subject><issn>1530-437X</issn><issn>1558-1748</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqF0c9LwzAUB_AiCs7pXfASPOipM7_aJEeZ-6GMbTAH3kKapqOjS2ayHfbfm1Lx4EFPL-R9XuDlmyS3CA4QguLpbTWaDzCEbMAFEoScJT2UZTxFjPLz9kxgSgn7uEyuQthCiATLWC9ZvJhQbyxwFdhPwcrY4HwAtQUzZzfp0vjalWBcF8aDiVeH2m4CWIdYwNI1p13sazBX1mnXNa-Ti0o1wdx8136yHo_eh9N0tpi8Dp9nqSY8O6SqQpRVXBvOOCuYUrqqKq1LjEUW7zElZcnKXGGCKSsoMQZluBRFiQpd5hiTfvLYvbv37vNowkHu6qBN0yhr3DFIAUlkccd_JecwFzjPRZQPf0pCafulMML7X3Drjt7GfSXPaSY4wjwi2CHtXQjeVHLv653yJ4mgbCOTbWSyjUx2kcWRu26kNsb8cIogzElOvgBOrJFt</recordid><startdate>20070301</startdate><enddate>20070301</enddate><creator>Corres, J.M.</creator><creator>Matias, I.R.</creator><creator>del Villar, I.</creator><creator>Arregui, F.J.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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An electrostatic self-assembled (ESA) method has been used to create sensitive films with an optimal overlay thickness. Two types of sensors have been designed: The first one is based on polyallylamine hydrochloride (PAH), polyacrylic acid (PAA), and the second one was done incorporating the pigment Prussian blue (PB) in the PAH/PAA matrix. A theoretical model of multilayer cylindrical waveguides based on coupled-mode theory has been used to predict the position of the attenuation bands as a function of the overlay thickness. Both sensors were tested and compared in terms of sensitivity and response time. A faster response was obtained with the introduction of PB particles in the polymeric matrix. Linear sensors in the pH range 4-7 were obtained, showing good repeatability and high sensitivity</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JSEN.2007.891933</doi><tpages>9</tpages></addata></record> |
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| subjects | Coupled-mode analysis electrostatic self-assembly (ESA) Electrostatics Fiber gratings Fibers long-period fiber gratings Mathematical models Nanomaterials nanophotonics Nanostructure nanostructured materials Nonhomogeneous media Optical fiber sensors pH sensor Pigmentation Polyallylamine hydrochloride Polymer films Predictive models Self-assembly Sensors Studies Transmission line matrix methods Waveguide theory |
| title | Design of pH Sensors in Long-Period Fiber Gratings Using Polymeric Nanocoatings |
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