BIOLOGICAL SENSORS

A sensor using the principle of surface plasmon resonance (SPR) to monitor the progress of the reaction between a sample (not shown) and a sensitive layer 20 (for example an antibody layer). The layer 20 is applied to the rear surface of a metallic film 19 formed on the surface of an optically trans...

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Bibliographic Details
Main Authors JOHN EDWARD MAURICE MIDGLEY, JAMES CHRISTOPHER IRLAM, MARTIN FRANCIS FINLAN, STEPHEN ALEXANDER CHARLES
Format Patent
LanguageEnglish
Published 23.02.1989
Edition4
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A sensor using the principle of surface plasmon resonance (SPR) to monitor the progress of the reaction between a sample (not shown) and a sensitive layer 20 (for example an antibody layer). The layer 20 is applied to the rear surface of a metallic film 19 formed on the surface of an optically transmissive component 28 in the form of a hemicylindrical lens 11 and slide 16. Collimated light from a source (not shown) is applied via a lens 2 which focusses the incoming beam 1 to a focus at point 3 to form a fan-shaped spread of light incident at point 3. The light is internally reflected at point 3, and emerges from the component 28 to be applied to a detector array 18 which latter is electronically scanned. The angle of incidence of the light at the point 3 is such as to span that angle which gives rise to surface plasmon resonance, together with a range of angles thereabout so that the progress of the resonant condition, as the reaction between the sample and the sensitive layer proceeds, can be monitored.
Bibliography:Application Number: AU19880021109