Smartphone-Based NFC Potentiostat for Wireless Electrochemical Sensing
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Biosensors and Analytical Detection · Analytical Chemistry and Sensors · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40000, Thailand
Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40000, Thailand
Protein and Proteomics Research Center for Commercial and Industrial Purpose (ProCCI), Khon Kaen University, Khon Kaen 40000, Thailand
Funding
National Innovation Agency · Silicon Craft Technology PLC. · Center of Excellence on Medical Biotechnology · S&T Postgraduate Education and Research Development Office · Office of Higher Education Commission of Thailand · Science Achievement Scholarship of Thailand
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