Substrate and apparatus for surface enhanced Raman spectroscopy

Details Substrate and apparatus for surface enhanced Raman spectroscopy Substrate and apparatus for surface enhanced Raman spectroscopy

1990-11-30

1993-10-19

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

G01J 344, G01N 2165

Patent

active

052550672

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.

REFERENCES:
patent: 4674878 (1987-06-01), Vo-Dinh
patent: 4781458 (1988-11-01), Angel et al.
patent: 5017007 (1991-05-01), Milne et al.
Bello et al, Applied Spectroscopy, vol. 44, No. 1, Jan. 1990, pp. 63-69.

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