2013 Fiscal Year Final Research Report
Simulation study on structure formation in biomembranes under shear flow
| Project/Area Number |
24740285
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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 | The University of Tokyo |
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Principal Investigator |
SHIBA Hayato 東京大学, 物性研究所, 助教 (20549563)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | オニオン相 / 粗視化分子動力学法 / 界面活性剤 / 剪断流 / 欠陥ダイナミクス / 並列計算 / 流体力学的計算手法 |
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| Research Abstract |
Multilamellar layers of surfactant membranes often form onion structures composed of unit cells of spherically multi-layered membranes. In this project, a highly-coarse-grained model with explicit solvent has been employed to treat this problem. We have done large-scale parallel simulations of the model to simulate a sub-micrometer-scale system, to allow large-scale undulation and deformation. In the simulations, the layers exhibited roll-like structures, which are in qualitative consistence with a precursor state to the onion phase observed in the previous experiments. We drew the dynamical phase diagram as a function of the membrane volume fraction and the shear rate.
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