Substrate and apparatus for surface enhanced Raman spectroscopy
US5255067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/656
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A substrate and apparatus for qualitatively and quantitatively detecting constituents of an environment by surface enhanced Raman spectroscopy. The substrate is composed of two separate phases: an adsorbing phase which has an affinity for the molecular constituents of interest, and a metallic phase that possesses the specific geometry, chemical and electromagnetic properties required to enhance emission of Raman signal frequencies of adsorbed molecules. An apparatus is provided which includes a monochromatic light source, a means to transmit the desired wavelength from the light source to the surface substrate surface, a means to collect the scattered Raman signal frequencies and transmit them to a detector, and a means to analyze the recorded response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.