Multianalytes Gas Sensors by Soft Lithography Indu

Authors: A El Sachat N Aspiotis M Vasileiadis G Mousdis S Pispas N Vainos C Riziotis

Publish Date: 2015

Volume: , Issue: , Pages: 181-192

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Abstract

In this work the study and development of photonic sensors using as sensitive material new nanostructured inorganic/organic hybrid optical materials and polymers is presented Particularly the development of some diffractive optical sensors based on inorganic salts NiCl2 CuCl2 dissolved in solgel matrices or by utilizing a novel amphiphilic diblock copolymer material namely polystyrene sulfonatebtertbutylstyrene SPSbPtBSis discussed Soft lithography techniques were employed for the fabrication of the diffraction gratings followed by proper tailoring of the sensing materials to optimize sensors’ response The gas sensors were successfully tested in the detection of ammonia and aromatic hydrocarbons benzene toluene achieving a relative low detectable analyte concentration down to 30 ppm The obtained results confirm the efficient and low cost implementation of point gas sensors for a variety of analytes By further optimization of the fabrication technique for the diffraction gratings and by employing also customizable sensitive materials this sensing approach could attract a lot of interest in various applicationsThis work was funded by the RD Project WelCOM 09SYN71856 Wireless Sensors for Engineering Asset Life Cycle Optimal Management funded by National Strategic Reference Framework NSRF 20072013/Hellenic General Secretariat for Research and Technology GSRT Financial support of this work by the General Secretariat for Research and Technology Greece project PolynanoKripis 447963 is gratefully acknowledged

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