S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
Award Criteria
Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Development of Improved pH Module and Miniaturized Water Quality Detection System

Hsing-Cheng Yu, Chung-Kai Chi, Ming-Yang Tsai, Chun-Lin Cheng, Jung-How Wang, and Szu-Ju Li

(Received April 17, 2020; Accepted May 13, 2021)

Keywords: fluorine-doped tin oxide (FTO), pH module, water quality detection

In recent years, many cases of water pollution have been caused by industrial wastewater. Industrial wastewater containing heavy metal pollution is discharged into the groundwater, causing land and environmental pollution and affecting human health. Hence, the development of a miniaturized water quality detection system (WQDS) to protect water resources is of great urgency. A miniaturized WQDS has the advantages of multiple parameter detection, continuous monitoring, miniaturized dimensions, high sensitivity, and accuracy. The representative water quality parameters monitored by the WQDS were temperature, pH, electrical conductivity, and copper ion (Cu2+) concentration. In addition, fluorine-doped tin oxide (FTO) was substituted for indium tin oxide (ITO) in this study to fabricate an improved pH-sensing module that reduces the interaction between subsystems, improves the measurement accuracy, enhances convenience, and reduces the manufacturing cost of the sensor chips. Electrodes combined with FTO conductive glass were designed and fabricated to achieve the miniaturized WQDS as a system on a chip. The miniaturized WQDS exhibits good potential for the precise detection of various water quality parameters and for application in the water-monitoring field.

Corresponding author: Hsing-Cheng Yu

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