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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Casati, R. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Compère, C.
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Topics
Publications (10/10 displayed)
- 2017Biofilms and corrosion of stainless alloys in sea water Multidisciplinary characterization of the biofilm
- 2017Infrared sensor for water pollution and monitoring
- 2012Surface enhanced infrared absorption (SEIRA) spectroscopy using gold nanoparticles on As2S3 glasscitations
- 2010Proteomic approaches applied to adhesion factors in marine biofilm-forming bacteria
- 2008Antifouling Properties of Poly(methyl methacrylate) Films Grafted with Poly(ethylene glycol) Monoacrylate Immersed in Seawatercitations
- 2003Sedimentation and fouling of optical surfaces at the ANTARES sitecitations
- 2002Electrochemical impedance spectroscopy of a free-standing oxide filmcitations
- 2002Time-of-flight secondary ion mass spectrometry: characterisation of stainless steel surfaces immersed in natural seawatercitations
- 2001Influence of stainless steel surface treatment on the oxygen reduction reaction in seawatercitations
- 2000Adsorption of proteins on an AISI 316 stainless-steel surface in natural seawater
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document
Infrared sensor for water pollution and monitoring
Abstract
Development of Mid-infrared sensors for the detection of biochemical molecules is a challenge of great importance. Mid-infrared range (4000 – 400 cm-1) contains the absorption bands related to the vibrations of organic molecules (nitrates, hydrocarbons, pesticides, etc.). Chalcogenide glasses are an important class of amorphous materials appropriate for sensing applications. Indeed, they are mainly studied and used for their wide transparency in the infrared range (up to 15 μm for selenide glasses) and high refractive index (between 2 and 3). The aim of this study is to synthesize and characterize chalcogenide thin films for developing mid-IR optical waveguides. Therefore, two (GeSe2)100-x(Sb2Se3)x chalcogenide glasses, where x=10 and 50 were chosen for their good mid-IR transparency, high stability against crystallization and their refractive index contrast suitable for mid-IR waveguiding. Chalcogenide glasses were prepared using the conventional melting and quenching method and then used for RF magnetron sputtering deposition. Sputtered thin films were characterized in order to determine dispersion of refractive index in UV-Vis-NIR-MIR. Obtained results were used for the simulation of the optical design in mid-infrared (λ = 7.7 μm). Selenide ridge waveguide were prepared by RIE-ICP dry etching process. Single-mode propagation at 7.7 μm was observed. Optical losses of 0.7 ± 0.3 and 2.5 ± 0.1 dB.cm-1 were measured in near-infrared (λ = 1.55 μm) and midinfrared (λ = 7.7 μm), respectively. Achieved results are promising for the fabrication of an integrated optical sensor operating in the mid-infrared. © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.From Conference Volume 10231Optical Sensors 2017Francesco Baldini; Jiri Homola; Robert A. LiebermanPrague, Czech Republic | April 24, 2017