Abstract
In this presentation, we report a battery-powered distance-based electrochemical sensor that can be operated without the need for laboratory-based instruments. This sensing platform can effectively convert an electrochemical current from a sensing reaction to a visual signal that is identifiable as the length of the silver band electrode (Ag BE). As presently configured, the electrochemical sensing reaction occurs when the working electrode triggers the electro-oxidation of the Ag on the Ag BE, which causes the Ag BE to shorten due to oxidation. The key advantage of this new sensor is that it can be operated using a two-electrode system, which allows this sensing platform to operate using only two AA batteries as the power source. We suggest this approach as a conceptual pathway that can lead to instrument-free distance-based electrochemical sensor design.
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