| Project/Area Number |
17K14372
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Biological physics/Chemical physics/Soft matter physics
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| Research Institution | Kokushikan University |
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Principal Investigator |
Nagoe Atsushi 国士舘大学, 理工学部, 講師 (70750579)
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| Research Collaborator |
Oguni masaharu
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 液体 / 配置エントロピー / 過冷却液体 / ガラス転移 / メソポーラスシリカ / メゾスコピック / 熱力学第3法則 / 蒸気圧 / 熱力学第３法則 / 低温物理 / 化学物理 / メゾスコピック系 / 表面・界面物性 |
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| Outline of Final Research Achievements |
Liquid Structure gradually changes to more stable and ordered one with decreasing temperature. However, the detail of ground state of molecular configuration of liquid at low temperature has been unclear. This is because, at low temperatures, ordinary liquids crystallize or vitrify (increase in viscosity and forms glassy state where it cannot change its molecular configuration.) In this research, by confinement within nanometer-sized silica pores, we tried to suppress the crystallization and to facilitate ordering of molecular configuration to realize the ground state at higher temperature than glass transition temperature Tg. It was found that toluene confined within nanometer-sized silica pores actually show such behavior (static freezing of molecular rearrangement motion) at above Tg, although there is a problem related to "wetting" on the pore wall interface.
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| Academic Significance and Societal Importance of the Research Achievements |
構造のはっきりしている結晶状態と比べて、分子配置に周期的な秩序がない液体の構造はいまだわかっていないことが多い。特に、凝固点よりはるかに低い温度の過冷却状態における液体の構造は、ガラス転移などの問題と関連して現代における重要な課題である。一方で、その研究は結晶化の問題やガラス化の問題によって実験的にはほとんど進展がない。本研究成果はそのような低温の液体の謎に対し、実験的なアプローチを提供することが期待される。
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