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Proceedings Paper

Novel block copolymers for multi-agent detection using polymer optical fibers
Author(s): Loukas Athanasekos; Stergios Pispas; Christos Riziotis
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Paper Abstract

A novel block copolymer material is applied successfully to a low cost Polymer Optical Fiber- POF for sensing applications. The copolymer consists of two blocks, one hydrophilic and sensitive to polar substances and the other hydrophobic and sensitive to hydrocarbons. Prediction of polymer's behavior in the presence of analytes has been successfully verified experimentally. The existence of two different blocks allows for the detection of a wide variety of agents and this response could be further engineered and enhanced by suitable adjusting the ratio of the two blocks. Using methanol as polymer's solvent PMMA POF successfully coated without deteriorating its properties. Functionalized U-bent POFs were employed as sensing tips overcladded with the sensitive material using a simple dip coating technique. Due to material's high transition temperature (well above 120°degC) the overlayers were very stable and environmentally robust. The developed sensors characterized and exhibited very fast response in ammonia, humidity, toluene and benzene, with full operational reversibility.

Paper Details

Date Published: 26 April 2012
PDF: 7 pages
Proc. SPIE 8426, Microstructured and Specialty Optical Fibres, 842615 (26 April 2012); doi: 10.1117/12.927086
Show Author Affiliations
Loukas Athanasekos, National Hellenic Research Foundation (Greece)
Univ. of Patras (Greece)
Stergios Pispas, National Hellenic Research Foundation (Greece)
Christos Riziotis, National Hellenic Research Foundation (Greece)


Published in SPIE Proceedings Vol. 8426:
Microstructured and Specialty Optical Fibres
Kyriacos Kalli; Alexis Mendez, Editor(s)

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