Optical sensor for detecting a chemical species
US10656091B2 · kind B2 · utility
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3References
15Claims
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Key dates
| Filing date | Dec 20, 2016 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Dec 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensor (1) for detecting a chemical species includes a substrate (3), a mesoporous matrix (5) disposed on the substrate, and a microporous matrix (7) disposed within the mesoporous matrix. The microporous matrix (7) includes an indicator dye (9) dispersed therein, the indicator dye (9) exhibiting changes in its optical properties in response to the presence of the chemical species. This arrangement significantly increases the amount of dye present, while allowing the medium to be analyzed greater access through the porous structure, thereby increasing the performance of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.