ENOBIO - First tests of a dry electrophysiology electrode using carbon nanotubes
Giulio Ruffini, Stephen Dunne, Esteve Farres, Paul C. P. Watts, Ernest Mendoza, Ravi Silva, Carles Grau, Josep Marco-Pallares, Lluis Fuentemilla, Bjorn Vandecasteele
Abstract
We describe the development and first tests of Enobio, a dry electrode sensor concept for biopotential applications. In the proposed electrodes, the tip of the electrode is covered with a forest of multi-walled CNTs that can be coated with Ag/AgCl to provide ionic-electronic transduction. The CNT brush-like structure is to penetrate the outer layers of the skin improving electrical contact as well as increae the contact surface area. In this paper, we report the results of the first tests of this concept -- immersion on saline solution and pig skin signal detection. These indicate performance on a par with state of the art research-oriented wet electrodes.
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