Patent ID: 8066944
Filing Date: 2011-11-29
Classification: G01N

Abstract:
1. A chemical sensing device for detecting a first analyte, comprising a light source, at least one luminescent reagent which is capable of luminescing when irradiated by the light source wherein the luminescence of the luminescent reagent is modifiable by the first analyte thereby changing a generation of heat, which change in heat generation is proportional to the concentration of the first analyte, a transducer having a pyroelectric or piezoelectric element and electrodes which are capable of transducing the change in heat to an electrical signal, wherein the at least one luminescent reagent is deposited on at least one of the electrodes, a detector which is capable of converting the electrical signal into an indication of the concentration of the first analyte, and an additional reagent which is capable of reacting with a second analyte to change the local concentration of the first analyte thereby modifying the luminescence of the luminescent reagent to provide an indication of the concentration of the second analyte, wherein the additional reagent is deposited on at least one of the electrodes.