Hologram containing sensor
US5989923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1996 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Oct 28, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/805
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a sensor (9) comprising a hologram (17) supported on or within a holographic support medium (10). A species to be detected is reactive with a substance disposed throughout, the sensor (9). Optionally, a chemical reactive with a species to be detected or a specific binding conjugate of a species to be detected is disposed throughout part of or all of the sensor (9). The resulting reaction(s) cause(s) variation(s) in the hologram (17) or holographic support medium (10) which in turn varies one or more optical characteristic(s) of the hologram (17). The variation in the optical characteristic(s) of the hologram (17) and/or the holographic support medium (10), preferably give(s) rise to a wavelength shift in incident radiation. The variation of the optical parameter is related to the species to be detected. The advantages of the sensor are that it is cheap, easy to manufacture and, once calibrated, reliable and robust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.