Wakayama University · Faculty of Systems Engineering

Research keywordsionic polymer actuators・Marangoni propulsion・ionic liquids・soft actuators・microfabrication・polymer-metal composites・variable-focus lens・electromechanical behavior

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• 分割された変形空間を有するダイアフラム型DEG伸縮装置とその解析・設計2025 · 佐野 巧実, 菊地 邦友, 長瀬 賢二
• Electric field control of propulsion force of a boat driven by chemical Marangoni effect2020 · © 2020 Elsevier B.V. Chemical Marangoni propulsion (CMP) is a driving on fluid by surface tension imbalance around object caused by anisotropic distribution of surfactant or by the reaction of Marangoni convection caused by the surface tension gradient. The purpose of the study is a remote control of the propulsion force in CMP. Electrostatic interaction of ionic surfactants as propellant with external electric field (EF) is expected to modify the surfactant distribution and modulate the surface tension gradient. We selected surface active imidazolium-based ionic liquids (ILs) as propellants. Effects of the application of the EF (667 kV/m) to the IL layer emitted from the object on the propulsion force and the accompanying Marangoni convection were evaluated on aqueous surface. When hydrophobic ILs with [PF6] anion were used, the application of the EF decreased the propulsion force and also decreased the flow velocity and flow width of Marangoni convection. The decreasing rate of the propulsion force increased with the alkyl-chain length of the IL cations. The maximum decreasing rate was 33 %. We considered that the main reason for the EF-induced reduction in the propulsion force is the decrease in the surface tension gradient due to the increases in the surface tension of the emitted IL layers caused by the rearrangement of the surface active IL molecules on aqueous surface. This is the first report about the EF control of the propulsion force in CMP.
• 自己修復材料、自己組織化、形状記憶材料の開発と応用事例 (第６章 形状記憶を利用したマテリアルの開発とその特性 第6節 形状記憶ポリマーを用いたイオン導電性高分子アクチュエータの開発)2020 · 菊地邦友( 担当： 分担執筆)
• 電気化学・インピーダンス測定のデータ解析手法と事例集 ～測定のテクニックを事例ごとにわかりやすく解説！～2018 · 立間 徹, 堺 英樹, 小野田 雅重, 岩村 振一郎, 青木 幸一, 西原 洋知 他多数( 担当： 分担執筆, 担当範囲: 第6章 導電性材料の電気化学測定と解析 第10節 ソフトアクチュエータの機械的特性と電気化学特性の評価)

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