Structural rheology in the bilayer membrane soft matter systems

2015 Fiscal Year Final Research Report

• Project/Area Number: 25287107
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: Nagaoka University of Technology
• Principal Investigator: FUJII SHUJI 長岡技術科学大学, 工学(系)研究科(研究院), 助教 (40401781)
• Co-Investigator(Kenkyū-buntansha): KOMURA Shigeyuki 首都大学東京, 理工学研究科, 准教授 (90234715)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ラメラ / スメクチック / ブルー相 / 液晶 / レオロジー / 欠陥 / 細胞核 / マイクロレオロジー

Outline of Final Research Achievements

Our interest in this study is if rheological properties of the various meso-scale structure in soft matter systems can be understood in a unified manner. In this study, we focus on dynamics of defects which are included in the ordered phase of soft matter. In the smectic rheology, we elucidated that the defects are significantly related to the non-equilibrium structural transition and thus to its rheological behavior. As with the smectic rheology, cholesteric blue phase, which is one of the typical cubic phases, reveals the non-equilibrium structural transition under shear by re-aligning the defects. Our findings suggest that the rheological behavior of soft matter systems can be unified from the viewpoint of the defect dynamics.
We also succeeded to perform the rheological measurement in the nuclear interior of the living cell.

Free Research Field

ソフトマター物理