ID | 66567 |
フルテキストURL | |
著者 |
Wakabayashi, Shoki
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Oh, Yuki
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Nakayama, Haruhito
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Wang, Jin
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Kiwa, Toshihiko
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
ORCID
Kaken ID
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抄録 | In recent years, hydrogen energy has garnered attention as a potential solution for mitigating greenhouse gas emissions. However, concerns regarding the inherent risk of hydrogen gas leakage and potential explosions have necessitated the development of advanced sensors. Within our research group, we have innovated an ultrathin platinum (Pt) film hydrogen sensor that gauges resistance changes in Pt thin films when exposed to hydrogen gas. Notably, the sensitivity of each sensor is contingent upon the thickness of the Pt film. To address the challenge of detecting hydrogen using multiple sensors, we integrated the ultrathin Pt film as a resistance element within a twin-T type notch filter. This filter exhibits a distinctive reduction in output signals at a specific frequency. The frequency properties of the notch filter dynamically alter with changes in the resistance of the Pt film induced by hydrogen exposure. Consequently, the ultrathin Pt film hydrogen sensor monitors output signal variations around the notch frequency, responding to shifts in frequency properties. This innovative approach enables the electrical control of sensor sensitivity by adjusting the operating frequency in proximity to the notch frequency. Additionally, the simultaneous detection of hydrogen by multiple sensors was successfully achieved by interconnecting sensors with distinct notch frequencies in series.
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キーワード | hydrogen sensor
ultrathin film
twin-T
notch filter
platinum
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発行日 | 2024-01-15
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出版物タイトル |
Sensors
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巻 | 24巻
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号 | 2号
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出版者 | MDPI
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開始ページ | 548
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ISSN | 1424-8220
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2024 by the authors.
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論文のバージョン | publisher
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PubMed ID | |
DOI | |
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関連URL | isVersionOf https://doi.org/10.3390/s24020548
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ライセンス | https://creativecommons.org/licenses/by/4.0/
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Citation | Wakabayashi, S.; Oh, Y.; Nakayama, H.; Wang, J.; Kiwa, T. Ultrathin Platinum Film Hydrogen Sensors with a Twin-T Type Notch Filter Circuit. Sensors 2024, 24, 548. https://doi.org/10.3390/s24020548
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