Verification of liquid-liquid transition in simple molecular liquids with small interaction between molecules

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400427
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: Tatsumi Soichi 京都工芸繊維大学, 材料化学系, 助教 (50533684)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 液体液体転移 / 中性子準弾性散乱 / 熱測定

Outline of Final Research Achievements

To elucidate the origin of liquid-liquid transition of cyclohexane constrained into nano-confinement, temperature dependences of its structure and dynamics are investigated by using X-ray powder diffraction, quasi-elastic neutron scattering, and numerical calculations.
From thermal analysis, variation involved with this transition is expected to be small. But we could succeed to see structural variation involved with this transition, which shows developments of inter-mediate length order around transition temperature. At the same time, dynamics is also changed around transition temperature. By using numerical calculation, this transition is related with growth of next-nearest length order which is not seen in any other systems, such as liquid crystal or something. Then, this feature could be typical on the liquid-liquid transition.

Free Research Field

ガラス転移・液体液体転移