Ultra-small sample analyzer for internal reflection spectroscopy

Details Ultra-small sample analyzer for internal reflection spectroscopy Ultra-small sample analyzer for internal reflection spectroscopy

1991-09-19

1993-05-11

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 356244, 356300, G01N 2117, G01N 2101

Patent

active

052104184

ABSTRACT:
An ultra-small sample analyzer for internal reflection spectrometry comprises a small hemispherical crystal of an infrared-transparent hard material whose flat surface receives the sample to be analyzed. The analyzing beam is contracted to a very small size when incident on the hemispherical surface. Pressure-applying means of a size substantially matching that of the beam at the sampling surface enables interaction of substantially the entire beam with the sample producing spectra of high contrast from microgram or nanogram quantities of the sample.

REFERENCES:
patent: 3157788 (1964-11-01), Roche
patent: 3240111 (1966-03-01), Sherman et al.
patent: 3478206 (1969-11-01), Gaglione
patent: 3486829 (1969-12-01), Wilks, Jr.
patent: 4602869 (1986-07-01), Harrick
patent: 5048970 (1991-09-01), Milosevic et al.
patent: 5093580 (1992-03-01), Sting

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