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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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥28,340,000 (Direct Cost: ¥21,800,000、Indirect Cost: ¥6,540,000)
Fiscal Year 2012: ¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2011: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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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 / 生物物理 / 揺動散逸定理 / 光トラップ / 揺らぎ応答 / 非平衡 / 力学特性 / 細胞 / 揺動力 / 細胞骨格 |
|---|
| 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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Report
(3 results)
Research Products
(99 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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[Presentation] Non-Gauss athermal fluctuations in Bacterial bath
Author(s)
Masato Aridome, takasi kurihara, Heev Ayade, Irwin Zaid, Daisuke Mizuno
Organizer
KITP conference "Active Processes in Living and Nonliving Matter"
Place of Presentation
Kavli Institute for Theoretical Physics, University of California, Santa Barbara, USA
Related Report
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