Study of a Noninvasive Nonenzymatic rGO Based Disposable Sweat Glucose Sensor

Abstract

This paper contains an initial study of nonenzymatic glucose sensor based on reduced graphene oxide and biopolymer chitosan. The experiments done in this study are prospective to detect small amount of glucose found in human’s sweat. Electrical property of the sensor is measured by arranging the sensor with a resistor in series, and then sampling the current that passes through the resistor. As they are connected in series, the current that passes through resistor is equal to the current that passes through the sensor. Various frequencies were used for current measurement, ranging from 1 kHz to 5 MHz. Recommended frequencies to use for the sensor measurement and analysis are ranging from 100 to 500 kHz, considering sensitivity of the sensor being favorable in those frequencies.