| Project/Area Number |
06044269
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Research Institution | Hokkaido University |
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Principal Investigator |
OSADA Yoshihito Faculty of Sciences, Hokkaido University Professor, 理学部, 教授 (60007804)
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| Co-Investigator(Kenkyū-buntansha) |
ジェロニミディス ジョー レディング大学(英国), シニアレクチャー
VINCENT Julian Center for Biomimetics University of Reading Senior Lecturer, シニアレクチャー
YASUNAGA Hidekazu Faculty of Sciences, Hokkaido University Instructor, 理学部, 助手 (80241298)
ぐん 剣萍 北海道大学, 理学部, 助教授 (20250417)
JERONIMIDIS George Center for Biomimetics University of Reading Senior Lecturer
GONG J.p. Faculty of Sciences, Hokkaido University Associate Professor
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| Project Period (FY) |
1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Keywords | Gradient material / Polymer gel / Actuator / Plasma polymerization / Plasma polymerized stirene film / Nafion film / Humidity sensor / Biomimetics |
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| Research Abstract |
The objective of the joint research project is to create a biomimetic actuator with polymer gels, that moves or deforms softly in response to the change in the humidity, an ion strength or the concentration of hormones.
We constructed a bilayr film in response to change in the humidity from a nafion film and plasma polymerized stirene film. The nafion film is hydrophilic owing to containing the sulfonic acid group and the plasma polymeraized stirene film is hydrophobic and pinhole free. The expansile force developed in the hydrophilic layr by changing in the humidity bends the "nonexpansible" hydrophobic layr. The displacement of the bilayr film increased as the relative humidity increased It recovered the original form after decreasing the relative humidity. The response time is about 30min in the expanding process, while it is a little longer in the contracting process.
This is the first attempt to create a biomimetic soft actuator by using a polymer gel film with a gradient structure. The joint project makes it possible to establish a biomimetic intelligent actuating system capable of sensing outside stimuli.
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