Method and device for analysing a sample using a resonant support, illuminated by infrared radiation
US12209956B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 4, 2020 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jun 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/5957
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for analysing a sample (20), the sample being capable of comprising an analyte, the sample extending on a resonant support (15 (, the resonant support having a surface on which a plurality of photonic crystals extend (16k, 16k+1), separated from one another, such that the sample extends between a light source (10) and the photonic crystals, the photonic crystals being such that: —a resonance wavelength (λk) is associated with each photonic crystal (16k) addressing the analyte, wherein the wavelengths of the photonic crystals define a resonance spectral band (Δλr), extending between 2 μm and 20 μm; —the transmission or the reflection of light by each photonic crystal addressing the analyte is maximum at the associated resonance wavelength; the method comprises the following steps: a) illuminating the support by the light source, the light source emitting an illumination lightwave (11), defining an illumination spectral band (Δλ) which at least partially covers the resonance spectral band (Δλr), such that a plurality of photonic crystals are simultaneously illuminated; b) acquiring an image (I) of the resonant support, then determining the presence o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.