| Project/Area Number |
24740286
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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 |
Biophysics/Chemical physics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
TATSUMI Soichi 東京工業大学, 理工学研究科, 助教 (50533684)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 化学物理 / ガラス転移 / 誘電緩和 / 液液転移 / 過冷却液体 / 単純系 / 細孔凝縮法 / 断熱型熱量計 |
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| Research Abstract |
The universality of supercooling liquid was examined by exploring the thermal property of the cyclohexane, carbon tetrachloride, and neopentane, such as having small inter-molecular interactions. Though, it is known that the glass transition temperature (Tg) of the ordinary liquid is in between 1/2 and 2/3 of each melting temperature, Tg of examined samples were all less than predicted temperature.
The lowering of the Tg enabled these substances to reveal hump of heat capacities in the vicinity of 130 K, which might be related to the structuring of the liquid from high-temperature liquid phase to stable low-temperature liquid phase. In particular, cyclohexane showed 1st order phase transition at 154 K with sharp heat capacity jump and it became the first example to examine liquid-liquid transition by heat capacity measurements in a single molecular liquid.
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