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Study on the Characteristics of the Ruthenium Oxide pH Electrode

稀有金属材料与工程 2006年第A3期35卷 256-258页

作者： Jung-Chuan Chou Diing-Jia Tzeng Graduate School of Electronic Engineering National Yunlin University of Science and TechnologyDouliouTaiwan 640China

Ruthenium oxide,which fabricated by radio frequency sputtering is used as the sensitive membrane,which shows that the pH sensitivity is very high and has a linear response in different buffer *** pH electrode,which applies the structure of separative structure egfet (Extended Gate Field Effect Transistor) insteads of the conventional gate ISFET (Ion Sensitive Field Effect Transistor) for reducing the cost of the fabrication and ***,the performance of the pH sensor was falsified by the drift and *** addition,the total response is composed of the intrinsic response and drift,and the hysteresis effect combines the slow response with ***,we would also investigate the drift in the buffer solutions and hysteresis effect in the different *** this way,the more accurate sensing properties are obtained by the RuO_x pH electrode.

关键词： ruthenium oxide egfet drift hysteresis

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Titanium Oxide Nanorods pH Sensors:Comparison between Voltammetry and Extended Gate Field Effect Transistor Measurements

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Materials Sciences and Applications 2014年第7期5卷 459-466页

作者： Elidia Maria Guerra Marcelo Mulato Department of Chemistry Biotechnology and Bioprocess EngineeringFederal University of Sao Joao Del ReiOuro BrancoBrazil Department of Physics Sao Paulo UniversityRibeirão PretoBrazil

In recent years there has increased interest in the characterization of titanium oxide nanorods for application in analytical devices. The titanium oxide nanorods (NRTiO) were obtained by hydrothermal reaction with a NaOH solution heated in the autoclave at 150°C for up to 50 h. Experimental data indicate that the prepared nanorods consist of anatase and rutile phases, with a possible interlayer structure. The NRTiO was investigated as pH sensor in the pH range 2 - 12, and the extended gate field effect transistor (egfet) configuration presented a sensitivity of 49.6 mV/pH. Voltammetric data showed a sensitivity of 47.8 mV/pH. These results indicate that the material is a promising candidate for applications as an egfet-pH sensor and as a disposable biosensor in the future.

关键词： Titanium Oxide Nanorods pH Sensors egfet Voltammetry

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