MOLECULE RECOGNIZING FUNCTION FILM AND SENSOR EMPLOYING IT

摘要

PURPOSE: To obtain a molecule recognizing function film, and a sensor employing the film, for detecting variation of concentration of specific molecule by converting into variation of secondary harmonic generating power. ;CONSTITUTION: A molecule recognizing function film 1 is formed on a transparent substrate 2 and disposed such that a sample 5 flowing through a channel 4 in a transparent flow cell 3 touches the film 1 directly. Light (basic wave) emitted from a light emitting element 6 transmits through the flow cell 3 and the sample channel 4 and impinges on the film 1. Light transmitted through the film 1 enters into a cut filter 7 where wavelengths other than second harmonic are cut off and only second harmonic impinges on a light receiving element 8. Variation of secondary harmonic is detected and processed at a signal processing section 9 thus determining concentration or specific element contained in the sample 5.;COPYRIGHT: (C)1994,JPO&Japio