Device and method for detecting chemical or biological species

US11828701B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Houssein Elmi Dawale · Grenoble, FR
• Franck Badets · Voiron, FR
• Sebastien Hentz · Grenoble, FR
• Guillaume Jourdan · Grenoble, FR
• Marc SANSA PERNA · Grenoble, FR
• Loïc Sibeud · Grenoble, FR

Key dates

• Filing date: Sep 23, 2022
• Grant date: Nov 28, 2023
• Expiry date: Sep 23, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12138
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A detecting device configured to detect chemical or biological species in a given environment, includes a matrix-array sensor formed from opto-mechanical discs that are optically and mechanically resonant, able to bind to species of the environment, and arranged in rows and columns. The opto-mechanical discs of a given row are optically coupled to the same optical waveguide. Actuating electrodes are provided in order to ensure the mechanical resonance of the opto-mechanical discs. One p-n junction is associated with each opto-mechanical disc, the junctions of a given column being electrically connected to the same biasing electrode, so as to block the flow through the corresponding opto-mechanical disc of a parasitic electrical current. A control circuit is configured to forward bias, during a time window of read-out of a disc of interest, the p-n junction of a disc of interest so as to place, via a thermo-optical effect, its resonant wavelength at a working wavelength, such that an optical signal propagating through the optical waveguide associated with the disc of interest is amplitude modulated.