The present invention provides a method for the controlled synthesis of nanostructures on the edges of electrodes and an apparatus capable of optical and electrochemical sensing. In accordance with the present invention, a method of fabricating nanowires is provided. In one embodiment, the method includes providing a substrate, creating a dielectric thereon, depositing a metal catalyst on the dielectric, patterning the metal catalyst, selectively etching dielectric, creating an electric field originating in metal catalyst, and applying a heat treatment. In another embodiment, the method includes providing a substrate, depositing a dielectric thereon, printing a metal catalyst on the dielectric and plastic substrate, printing silicide along the edges of metal catalyst, creating an electric field originating in metal catalyst; and applying chemical vapor deposition. The apparatus of the present invention comprise an electrode with nanowires grown thereon, wherein the nanowires' placement and direction of growth is controlled.
Bhansali, Shekhar, "Integrated nanowires/microelectrode array for biosensing" (2011). USF Patents. 442.
University of South Florida