Optical surface plasmon sensor device
US4844613A · kind A · utility
148Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1987 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Nov 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/805
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensor device uses surface plasmon resonance to detect the presence of a specific material. A transparent body (12) is coated with a thin gold film (14) which film may be coated e.g. with an antibody material. The arrangement is illuminated with a divergent light beam and light internally reflected from the gold film is detected by a photodiode array (16). The dielectric conditions adjacent the gold film determine the position of the surface resonance angle, this being indicated by a dark area on the detector array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.