Diffential optical sensor for detection of chemical or biological species

Engineer:

ABSTRACT

The CODAC project focuses on developing a miniature sensor for detection of gaseous or biological species. Its foundation lies on optical transduction based on a plasmonic effect discovered in 2014 in Laboratoire Hubert Curien, exploiting an phenomenon of energy transfer between orders diffracted by a grating. In the “sensor” configuration that was the object of a patent, it enables a miniature optical sensor setup, with high sensitivity and potentially low cost, because of its simple, auto-referenced detection. Its principle was put in practice in several projects: ANR (CAPTAIN, 2018-2023) for detection of NO2, O3 and NH3 gases; region (PAR CAPTHY 2022-2025) for H2 detection; Université Jean Monnet (in co-tutelle with Ottawa University) for detection of biological species. This project aims to accelerate transition of this technology to the industry


 
 


CONFERENCES

Pascal Giraud, Arnaud Meyer, Irvin Girault, Isabelle Verrier, Christelle Varenne, et al.. High sensitivity Grating-SPR based sensor using Low-Loss Surface Plasmon modes coupling for the detection of H2. C'Nano 2025: The Nanoscience Meeting, Mar 2025, Paris, France. , BOOK OF ABSTRACTS Nanophotonics & Nanooptics, 2025. ⟨hal-05010259⟩





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