2023 Fiscal Year Final Research Report
Development of functional microcapsule based on piezoelectric PVDF films
Project/Area Number |
21K04701
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 26040:Structural materials and functional materials-related
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Research Institution | Sendai National College of Technology |
Principal Investigator |
Imai Yuji 仙台高等専門学校, 総合工学科, 准教授 (40334693)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | マイクロカプセル / 内視鏡 / PVDFフィルム / pHセンサ |
Outline of Final Research Achievements |
We investigated the amount of displacement of poly(vinylidene fluoride)(PVDF) films fabricated using a drop-coating method when voltage was applied to the PVDF films. The displacement was the largest near the resonance frequency of the PVDF film when a square wave AC voltage was applied, confirming that it can be used as an actuator to move a microcapsule endoscope. Furthermore, for a capsule endoscope-mounted pH sensor in which a palladium (Pd) thin film was deposited on the PVDF film, we confirmed that the output voltage from the sensor and the resistance value of the Pd thin film changed with a solution that simulated digestive fluid by adjusting the pH value. The pH sensor operated by the Pd thin film absorbing hydrogen ions in the solutions, and a sensor design to support gastrointestinal treatment has been completed.
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Free Research Field |
構造材料,機能材料
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Academic Significance and Societal Importance of the Research Achievements |
本研究で得られたPVDF系強誘電体フィルムに関する知見により,消化管の診療が必要な部位にカプセル内視鏡を移動させるアクチュエータや,消化液採取によるpH値測定で上部消化管のその場診断が可能なpHセンサ搭載型カプセル内視鏡の開発が可能となる。そのため,本研究は次世代のカプセル内視鏡の新しい方式を提案するものであり,新規性および産業上の活用性いずれの観点からも非常に重要である。特に,医療機器や検査装置への応用が可能であり,医療介護分野への大きな貢献が期待できる。
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