Biosensors Based on Sol–Gel Nanoparticle Matrices

Abstract

In recent years, many researchers have been engaged in the development of ­biosensors for environmental and biomedical monitoring. A biosensor is an analytical­ device composed of a biological sensing element such as a protein, antigen, antibody, DNA, or RNA in intimate contact with a physical, optical, mass, or ­electrochemical transducers, which can generate a measurable signal relating to the concentration of an analyte. Many review articles have discussed the development of this field [1--5].