Galvanic displacement of nanostructured gold for flavoenzyme adsorption in biotechnology

Sensors are the devices which are composed of an active sensing material with a signal transducer. The recent development in the nanotechnology has paved the way for large number of new materials and devices of desirable properties which have useful functions for numerous electrochemical sensor and biosensor applications. In this work, results on the galvanic displacement of gold on silicon in different electrolytes will be presented. The growth of the gold films is characterized and the interfacial behavior with the substrate is characterized by microindentation in order to highlight the adhesion as a function of the electrolyte. Results on high surface area gold nanostructures on silicon will be presented. Such films will be tested and surface morphology will be correlated to the adsorption of flavoenzymes.