학술논문
Self-Powered Flexible Wearable Sensing Platform for Ascorbic Acid Detection in Sweat
Document Type
Periodical
Source
IEEE Sensors Journal IEEE Sensors J. Sensors Journal, IEEE. 23(20):24179-24187 Oct, 2023
Subject
Language
ISSN
1530-437X
1558-1748
2379-9153
1558-1748
2379-9153
Abstract
Laser-scribed graphene electrodes (LSGEs) are an excellent platform for biosensors due to their electronic properties, large surface area, and high porosity that enhances the electron transfer rate. The flexibility of LSGEs combined with the advantages of electrochemical techniques for a portable device is very suitable for wearable applications. We report a lightweight (< 2 g) wearable platform paired with nonmodified LSGE to detect ascorbic acid (AA) in sweat. Electrochemical techniques, such as square wave voltammetry (SWV) and chronoamperometry (CA), were used to acquire the data. The acquired data are transmitted wirelessly to the user via Bluetooth (BLE) or through universal asynchronous receiver–transmitter (UART) using a custom-made application. The limits of detections (LODs) achieved were 66 and 4.7 $\mu \text{M}$ for SWV and CA, respectively. Furthermore, a self-powered feature is demonstrated, in which the device can be powered by harvesting energy from ambient light.