NANOELECTRODE ARRAY FOR BIOSENSOR APPLICATIONS

AFM imaging reveals an array of conductive nanowires prepared on a metal electrode surface via magneto-assisted self-assembly of 18nm gold-shell/magnetic-core colloidal nanoparticles. One can clearly see the dense bundles of the large-aspect-ratio nanowires comprised of the polymer-bound nanoparticles. This multiscale hierarchical nanostructure, with a large electrochemically active area, enabled us to significantly enhance currents associated with bioelectrocatalytic processes that occur on the electrode surface. The studied nanoelectrode array is suggested as a universal platform for different enzyme-based biosensors, immunosensors, and DNA sensors.

Scan Size: 20 µm

Authors: Roman Sheparovych, Yuri Roiter, Mikhail Motornov, Ihor Tokarev, and Sergiy Minko

Organization: Clarkson University, NY, USA

Model used: Dimension 3100 SPM with NanoScope IV Controller