| 摘要 |
<p>The invention provides a method and apparatus for detection of binding of biological and/or chemical components of liquid or gaseous mixtures and solutions, which are mainly of biological origin and/or determine parameters of living activity of biological objects, to substances that bind the said components due to a biological, chemical or physical interaction; and analysis of mixtures and solutions to determine presence of biological and/or chemical components. Binding substances are arranged on a surface of or inside a sensor layer, which changes its thickness due to the binding being detected; the layer is affected by the light of different wavelengths; a signal due to interference on the sensor layer is registered in the reflected or transmitted light. In the first variant, the signal is represented by a spectrum; the sensor layer is more than 10 mu m thick and exceeds the maximum-recorded wavelength by at least an order of magnitude; information about the binding being detected is obtained from analysis of a spectral shift of interference maximums and minimums. In the second variant, the light passes also a scanned Fabry-Perot interferometer; the recorded signal is a dependence of intensity of the resulting light upon changes of base of the scanned Fabry-Perot interferometer, in which maximums due to correlation of the spectral characteristics of interaction of the light with the sensor layer and interferometer are observed; information about the binding being detected is obtained from a shift of the said dependence along values of base. In the third variant, other interferometers are used, which are scanned due to a change of the path difference of interfering beams. <IMAGE></p> |
