2013 Fiscal Year Final Research Report
Nonequilibrium mechanics and athermal fluctuations n cytoplasm
| Project/Area Number |
23684036
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Kyushu University |
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Principal Investigator |
MIZUNO Daisuke 九州大学, 理学(系)研究科(研究院), 准教授 (30452741)
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| Project Period (FY) |
2011-04-01 – 2013-03-31
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| Keywords | 非平衡力学 / 細胞力学 / マイクロレオロジー / レビ統計 |
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| Research Abstract |
We use truncated Lévy statistics model to investigate the non-equilibrium statistics and dynamics of active gel by analyzing the fluctuations of probe particles. The model incorporates both thermal and athermal fluctuations. A single myosin, which acts as a force dipole, in elastic actin network produced a displacement field proportional to 1/r2. We found out that the full displacement distribution of the athermal fluctuations of probe particles follows truncated Lévy distribution with a power law tail exponent 3/2. Sum action of multiple motor proteins, which drives the probe particle, only slowly converges to Gauss distribution because of the 1/r2 spatial decay of the motor impacts.
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Research Products
(60 results)
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[Presentation] Non-Gauss athermal fluctuations in Bacterial bath2014
Author(s)
Masato Aridome, takasi kurihara, Heev Ayade, Irwin Zaid, Daisuke Mizuno
Organizer
国際学会, KITP conference "Active Processes in Living and Nonliving Matter"
Place of Presentation
Kavli Institute for Theoretical Physics, University of California, Santa Barbara, USA
Year and Date
2014-02-12
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