| Project/Area Number |
21F20769
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 外国 |
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| Review Section |
Basic Section 35020:Polymer materials-related
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| Research Institution | Hokkaido University |
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Principal Investigator |
グン 剣萍 北海道大学, 先端生命科学研究院, 教授 (20250417)
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| Co-Investigator(Kenkyū-buntansha) |
LAMA MILENA 北海道大学, 先端生命科学研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2021-04-28 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2022: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2021: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | Photonic hydrogel / lamellar bilayers / self-assembly / mechanical properties / surfactant |
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| Outline of Research at the Start |
Brilliant colors of living organisms are obtained by interaction of visible light with periodical structures at the nanoscale (e.g. iridescence of beetles). Soft materials such as hydrogels are of particular interest for developing bio-inspired stimuli-responsive photonic sensors (e.g. pH, temperature). The Gong group used a non-ionic surfactant (DGI) in its lamellar phase to induce large-scale structural anisotropy in photonic hydrogels. Thus, investigating other optically active liquid crystal phases by controlling DGI self-assembly could unveil new photonic properties in such materials.
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| Outline of Annual Research Achievements |
In-situ structural analysis by USAXS have revealed that the deformation mechanisms within the hydrogels have been modified even by very small amounts of co-surfactants, meaning that the chemistry of the co-surfactant is of utmost importance in this system. Such observations have led us to hypothesize that interfacial interactions between the lamellae and the gel matrix between lamellae play an important role in the deformation mechanisms during uniaxial loading or cyclic loading by helping to dissipate more energy. We expect that such understanding will help to deepen our knowledge of this system in future studies involving the mechanical response under different loading conditions. The results of this research project have been summarized into an article, submitted to the journal ACS Omega (currently under review). Thus, this research project will be published online soon. Thanks to the novelty of the work, other fundamental questions are expected to be elucidated especially regarding the mechanical behavior of this type of hydrogel. Unfortunately, USAXS conditions were not suitable to obtain any data at solution state and the SAXS machine available at the university did not give good results (even with a custom-made sample-holder) due to a lack of beam power.
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| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和4年度が最終年度であるため、記入しない。
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