engleski

A new RFID/NFC wireless platform for mobile electrochemical sensing

We are researching new and emerging applications of mobile and wearable electrochemical sensing by the simultaneous development of low-cost chemical sensors together with an RFID/NFC-enabled wireless platform. Wireless connectivity allows sensor data to be harvested on a Smartphone and will in future allow data to be sent to the cloud. Short-range wireless radio protocols such as Bluetooth, ZigBee, WiFi, RFID and NFC have paved the way for connecting billions of devices to the internet, a phenomenon referred to as the Internet of Things (IoT). The Internet of Things is expected to revolutionise business and consumer services [1]. The fusion of chemical and biosensor technologies with mobile devices is enabling a paradigm shift in how and where we use chemical and biological sensors. This is impacting healthcare diagnostics [2], environmental monitoring [3], personal fitness monitoring [4], and chemical and biological threat detection [5]. The new platform is mobile, wearable, lightweight and has ultra low-power consumption and will connect wirelessly to RFID systems and to NFC-enabled Smartphones, Fig.1. In this work we show how the mobile platform performs with potentiometric ion- selective electrodes (ISEs) fabricated from carbon-nanotubes, and demonstrate its instrumental performance versus laboratory potentiostats and atomic absorption spectroscopy (AAS) as a reference method. Additionally, the platform is shown in amperometric mode by monitoring the electrochemical reduction of [Fe(CN)6]3− to [Fe(CN)6]4−, and its instrumental performance is demonstrated with commercially available amperometric blood-glucose test strips (Roche Diagnostics Accu-Chek®).

RFID; NFC; Electrochemical sensors; Potentiometry; Amperometry

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