Investigation of a Wireless Real-Time pH Monitoring System Based on Ruthenium Dioxide Membrane pH Sensor

This paper proposed a wireless real-time pH monitoring system. This system was associated ruthenium dioxide (RuO 2 ) membrane pH sensor, microcontroller, liquid-crystal display (LCD), C/C++ program, and WiFi communication module to develop and use for ecosystem monitoring in the future. The rutheniu...

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Veröffentlicht in:	IEEE transactions on instrumentation and measurement 2020-02, Vol.69 (2), p.479-487
Hauptverfasser:	Liao, Yi-Hung, Lai, Hsuan
Format:	Artikel
Sprache:	eng
Schlagworte:	Dioxides Ecological monitoring Electrochemical impedance analysis Indium tin oxide indium tin oxide (ITO) Indium tin oxides Liquid crystal displays Membranes Microcontrollers Monitoring Monitoring systems Morphology Polyethylene terephthalate polyethylene terephthalate (PET) Radio frequency Real time Ruthenium ruthenium dioxide (RuO₂) Ruthenium oxide Scanning probe microscopy Sensors sputtering Substrates Thin films WiFi Wireless communication wireless pH monitoring system Wireless sensor networks
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Beschreibung
Zusammenfassung:	This paper proposed a wireless real-time pH monitoring system. This system was associated ruthenium dioxide (RuO 2 ) membrane pH sensor, microcontroller, liquid-crystal display (LCD), C/C++ program, and WiFi communication module to develop and use for ecosystem monitoring in the future. The ruthenium dioxide thin film of the pH sensor was deposited onto indium tin oxide (ITO) and polyethylene terephthalate (PET) substrates by the radio frequency (RF) sputtering system. The surface morphology of RuO 2 thin film with scanning probe microscopy (SPM) was investigated. The electrochemical impedance analysis of RuO 2 thin film was also studied.
ISSN:	0018-9456 1557-9662
DOI:	10.1109/TIM.2019.2903698