Smartphone-Based NFC Potentiostat for Wireless Electrochemical Sensing

Most electrochemical sensing requires affordable, portable and easy-to-use electrochemical devices for use in point-of-care testing and resource-limited settings. This work presents the design and evaluates the analytical performance of a near-field communication (NFC) potentiostat, a flat card-size...

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Bibliographic Details
Published inApplied sciences Vol. 11; no. 1; p. 392
Main Authors Krorakai, Karnpimon, Klangphukhiew, Supannika, Kulchat, Sirinan, Patramanon, Rina
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2021
Subjects
Antennas
Ascorbic acid
battery-less
Carbon
Communication
Design
Digital signal processors
Electrochemistry
Electrodes
Experiments
Ferricyanide
Laboratories
Near field communication
Performance evaluation
Portable equipment
Potassium
potentiostat
Radio frequency identification
Semiconductors
Sensors
smartphone
Smartphones
Uric acid
Voltammetry
United States > US
Texas
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Summary:Most electrochemical sensing requires affordable, portable and easy-to-use electrochemical devices for use in point-of-care testing and resource-limited settings. This work presents the design and evaluates the analytical performance of a near-field communication (NFC) potentiostat, a flat card-sized electrochemical device containing a microchip for electrical analysis and an NFC antenna for smartphone connection. The NFC interface is a wireless connection between the microchip and smartphone to simplify measuring units and make the potentiostat into a passive operated device, running without a battery. The proposed potentiostat can perform the common electrochemical techniques including cyclic voltammetry and chronoamperometry with a current range and voltage range of ±20 µA and ±0.8 V. The performance of the NFC potentiostat is compared to a commercial benchtop potentiostat using ferricyanide as a standard solution. The results show that the NFC potentiostat is comparable to a commercial benchtop potentiostat for both cyclic voltammetry and chronoamperometry measurements. The application of the proposed potentiostat is demonstrated by measuring ascorbic acid concentration. As described, the NFC potentiostat, which is compatible with a smartphone, is low-cost, small in size and user-friendly. Thus, the device can be developed for on-site measurement to apply in various fields.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11010392