Characterization and Optimization of Thermally Grown Iridium Oxide and Its Application to pH Sensors

In this study, we evaluate the thermal oxidization methods of iridium to simplify the fabrication of Ir/IrOx pH microsensors. Iridium oxide (IrOx) is a typical pH-sensing material. Specifically, three parameters of the previously reported “carbonate-melt” method are modified, namely, the oxidization...

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Published in:Sensors and materials Vol. 30; no. 5(2); p. 1175
Main Authors: Ratanaporncharoen, Chindanai, Tabata, Miyuki, Watanagool, Natthapol, Goda, Tatsuro, Matsumoto, Akira, Sriyudthsak, Mana, Miyahara, Yuji
Format: Journal Article
Language:English
Published: Tokyo MYU Scientific Publishing Division 2018
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Abstract In this study, we evaluate the thermal oxidization methods of iridium to simplify the fabrication of Ir/IrOx pH microsensors. Iridium oxide (IrOx) is a typical pH-sensing material. Specifically, three parameters of the previously reported “carbonate-melt” method are modified, namely, the oxidization temperature, oxidization time, and annealing process after oxidization. Then, we compare the characteristics of the fabricated sensors (i.e., the initial pH responsivity, time required to reach the steady state, and potential drift). The pH response depends on the oxidization temperature and time.
AbstractList In this study, we evaluate the thermal oxidization methods of iridium to simplify the fabrication of Ir/IrOx pH microsensors. Iridium oxide (IrOx) is a typical pH-sensing material. Specifically, three parameters of the previously reported “carbonate-melt” method are modified, namely, the oxidization temperature, oxidization time, and annealing process after oxidization. Then, we compare the characteristics of the fabricated sensors (i.e., the initial pH responsivity, time required to reach the steady state, and potential drift). The pH response depends on the oxidization temperature and time.
Author Miyahara, Yuji
Matsumoto, Akira
Goda, Tatsuro
Tabata, Miyuki
Sriyudthsak, Mana
Ratanaporncharoen, Chindanai
Watanagool, Natthapol
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Snippet In this study, we evaluate the thermal oxidization methods of iridium to simplify the fabrication of Ir/IrOx pH microsensors. Iridium oxide (IrOx) is a typical...
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SubjectTerms Iridium
Parameter modification
Sensors
Title Characterization and Optimization of Thermally Grown Iridium Oxide and Its Application to pH Sensors
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