Study of a polymer optical microring resonator for hexavalent chromium sensing

Farida Meziane 1 Vincent Raimbault 2, 1 Hamida Hallil 1 Simon Joly 1 Véronique Conédéra 3 Jean-Luc Lachaud 1 Laurent Béchou 1 Dominique Rebière 1 Corinne Dejous 1
1 IMS - Laboratoire de l'intégration, du matériau au système
2 LAAS-MICA - Équipe MICrosystèmes d'Analyse
LAAS - Laboratoire d'analyse et d'architecture des systèmes
3 LAAS-TEAM - Service Techniques et Équipements Appliqués à la Microélectronique
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : This work presents a design method for an Optical Microring Resonator (OMR) dedicated to specific heavy metal species sensing. A Top-Down design approach is used to create an OMR specifically designed for hexavalent chromium sensing, and suitable to a final Lab on Chip integration. Its operating principle is based on optical absorption measurement. This spectral absorption is induced by the colorimetric metallic complexation of hexavalent chromium with 1,5 diphenylcarbazide (DPC). The light enhancement at resonance wavelengths in an OMR allows highly sensitive measurements of the fluid optical absorbance by enhancing the effective path length. Chromate ions react with DPC at visible range. Singular red–violet complex is formed and induce a significant change of light intensity in the transmission spectrum. The intrinsic maximum absorption of metallic complex around 545 nm makes the polymer ring resonator parameters changing namely its effective index and attenuation value at resonance. The design considerations of the OMR have been analyzed to optimize critical parameters regarding the polymer ring resonator geometry. Simulations results have been investigated which lead to the geometry of a prototype device.
Keywords : Spectrophotometric method Hexavalent chromium Visible wavelengths Optical Microring Resonator Polymer 5-diphenylcarbazid 1
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Journal articles
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https://hal.archives-ouvertes.fr/hal-01112028
Contributor : Corinne Dejous <>
Submitted on : Monday, February 2, 2015 - 10:22:47 AM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM

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CNRS | IMS-BORDEAUX | IMS-BORDEAUX-FUSION | INSA-TOULOUSE | LAAS-MICA | LAAS-MICRO-NANO-BIO-TECHNOLOGIES | LAAS-TEAM | LAAS | INSA-GROUPE | UNIV-TLSE3 | UT1-CAPITOLE | UNIV-TLSE2

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Farida Meziane, Vincent Raimbault, Hamida Hallil, Simon Joly, Véronique Conédéra, et al.. Study of a polymer optical microring resonator for hexavalent chromium sensing. Sensors and Actuators B: Chemical, Elsevier, 2015, 209, pp.1049-1056. ⟨10.1016/j.snb.2014.11.101⟩. ⟨hal-01112028⟩

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