ANALYTIC PROCESS USING POROUS SILICON TO DETECT A SUBSTANCE OR DETERMINE THE CONCENTRATION OF A SUBSTANCE IN SOLUTIONS AS WELL AS AN ANALYTIC DEVICE FOR SUCH A PROCESS

摘要

In an analytic process using porous silicon, a substance is detected or itsconcentration in a fluid is determined, based on the change in opticalproperties of porous silicon as a function of the index of refraction of thesubstance or of the fluid containing the substance present in the pores of theporous silicon. An analytic device using porous silicon to detect a substanceor determe the concentration of a substance in a fluid consists of a componentwhich is at least partly made of porous silicon, the optical property of whichis dependent on the index of refraction of the substance or of the fluidcontaining the substance, where a change in the optical property of poroussilicon can be measured to indicate detection of the substance or to determinethe concentration in the pores of the porous silicon.