METHOD OF SEEKING AT LEAST ONE ANALYTE IN A MEDIUM LIKELY TO CONTAIN IT

Author

JC Cau, H. Lalo, JP Peyrade, C Vieu, C Thibaut, C Séverac

Journal

Patent

Publication Date

06/22/2011

Abstract

A new method of seeking the presence of an analyte bound to a probe, wherein a periodic geometric pattern (24), constituting a diffractive system (2), is formed by alternating areas including a probe A, and areas not including the probe A. The diffractive system (2) is made to be diffractive before a sensitization step, i.e. a step during which a probe is temporarily brought into contact with a medium likely to contain an analyte and during which the possible analyte binds to the probe. The method includes at least the following steps: measurement of a power P1 of a first-order diffraction beam of a diffraction field produced by the diffractive system, with the probe unsensitized, sensitizing the probe A, measurement of a power P1a of a first-order diffraction beam of a diffraction field produced by the diffractive system, and comparison of the measured powers P1 and P1a.

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Date added: 2012-08-08 00:00:00 | Last time updated: 2012-08-10 08:25:36 | Viewed: 971 times

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