2026-03-13T17:53:08Z https://hiroshima.repo.nii.ac.jp/oai

oai:hiroshima.repo.nii.ac.jp:02007297 2025-02-21T09:38:37Z 1730444907710

Self-propelled object that generates a boundary with amphiphiles at an air/aqueous interface Fujita, Risa Fujita Risa Matsuo, Muneyuki Matsuo Muneyuki Nakata, Satoshi Nakata Satoshi embargoed access © 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 Self-propulsion Amphiphiles Intermolecular interaction Reciprocating motion Benzoic acid A benzoic acid (BA) disk was investigated as a novel self-propelled object whose driving force was the difference in surface tension. 4-Stearoyl amidobenzoic acid (SABA) was synthesized as an amphiphile to control the nature of motion based on intermolecular interactions between BA and SABA. The BA disk exhibited characteristic motion depending on the surface density of the SABA on the aqueous phase, that is, reciprocating motion as a one-dimensional motion and restricted and unrestricted motion as a two-dimensional motion. The trajectory of the reciprocating motion was determined by the initial direction of motion, and the boundary between an aqueous surface and the BA-SABA condensed molecular layer was used as the field’s boundary. The presented results indicate that the characteristic nature of motion can be designed at the molecular level based on the intermolecular interactions between an energy-source molecule and an amphiphile. This study was supported by JSPS KAKENHI (Nos. 20H01712, 20H01871, 21H00996, 22 K14657), the Iketani Science and Technology Foundation (0351181A), the Cooperative Research Program of the “Network Joint Research Center for Materials and Devices" (No. 20231004) to S. N. and M. M., the JSPS Bilateral Joint Research Project between Japan and the Polish Academy of Sciences (JPJSBP120204602), and the JSPS-Hungary Bilateral Joint Research Project (JPJSBP120213801). In addition, this study was supported by a Hiroshima University Graduate School Research Fellowship and a Sasakawa Scientific Research Grant from the Japan Science Society (2022-6012) to R.F. Elsevier 2024-02-21 eng journal article AM https://hiroshima.repo.nii.ac.jp/records/2007297 https://doi.org/10.1016/j.jcis.2024.02.156 日本学術振興会 20H01712 地域と連携・協働したペアレント・メンターの持続的活動を支える研修プログラムの開発 Japan Society for the Promotion of Science 20H01871 Development of peer support program for parents living infants with autism: exploring the impact of parent mentor 日本学術振興会 21H00996 社会性昆虫に学ぶ柔軟で頑健な組織づくりと機能発現の実験的および理論的研究 Japan Society for the Promotion of Science 22K14657 社会性昆虫に学ぶ柔軟で頑健な組織づくりと機能発現の実験的および理論的研究 日本学術振興会 自己駆動体の集団運動に対する数理モデリングと数理解析 Japan Society for the Promotion of Science 自己駆動体の集団運動に対する数理モデリングと数理解析 日本学術振興会 物理的自触媒反応で実現する自己増殖アクティブマター Japan Society for the Promotion of Science 物理的自触媒反応で実現する自己増殖アクティブマター Journal of Colloid and Interface Science 663 329 329 335 https://hiroshima.repo.nii.ac.jp/record/2007297/files/JCIS_663_329.pdf 1.2 MB 2026-02-21