Portable Electrochemical Sensing System Attached to Smartphones and Its Incorporation with Paper-based Electrochemical Glucose Sensor
2017
This paper described the development of a small and low cost
biosensorconsisting of a smartphone-based electrochemical
biosensordevice and a paper-based
biosensor. The device harvested power from the smartphone and transferred data through audio jack. We designed CMOS circuits including a power supply circuit, a
potentiostat, and a ΔΣ modulator. The fabrication of a paper-based
biosensorwas simple: the three electrodes were directly drawn on chromatography paper using a carbon pencil. The paper-based
biosensorwas low cost, disposable, portable and friendly to the environment. The sensing system was designed to perform the
chronoamperometrymeasurement, and the glucose concentration in a liquid specimen was detected. Results showed that the sensing system was capable of measuring the glucose concentration as precisely as expensive equipments.
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