2010 Fiscal Year Final Research Report
Structural change and nonequilibrium dynamics in small soft systems
| Project Area | Creation of non-equilibrium soft matter physics: Structure and dynamics of mesoscopic systems |
|---|
| Project/Area Number |
18068005
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
SANO Masaki The University of Tokyo, 大学院・理学系研究科, 教授 (40150263)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MURAYAMA Yoshihiro 東京農工大学, 大学院・工学研究院, 准教授 (60334249)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
MURAYAMA Yoshihiro 東京農工大学, 大学院・工学研究院, 准教授 (60334249)
HARADA Takahiro 東京大学, 大学院・理学系研究科, 講師 (80432152)
|
|---|
| Project Period (FY) |
2006 – 2010
|
| Keywords | 非平衡定常状態 / 光ピンセット / ソフトマター / 非平衡枯渇力 / マイクロレオロジー |
|---|
| Research Abstract |
Understanding linear/nonlinear responses and fluctuations in nonequilibrium states is one of the important topics in statistical mechanics. Such peculiar responses become evident especially in small systems consist of soft matter. Our aim of the research was to explore new phenomena in nonequilbirium soft matter and understand their dynamics and fluctuations based on statistical mechanics and nonlinear dynamics. Accomplishments of the research are following. (1) Findings of nonlinear response and internal friction in the stretching process of single DNA molecules, (2) Stretching single DNA molecules by thermal gradient, (3) Observation of nonlinear responses in unfolding dynamics of a single protein (SNase), (4) Experimental verification of a new nonequilibrium equality using driven colloid systems, (5) Discovery of nonequilibrium depletion force and development of a new method for micromanipulation, (6) Discovery of experimental evidence of the universality in directed percolation criticality, (7) Discovery of the universal fluctuations of growing interfaces in turbulent liquid crystals, (8)Discovery of surface instabilities in vertically vibrated suspensions, (9) Finding of ordered patterns in cell shape dynamics during cell migration, (10) Measurement of 3D force distribution in single biological cell during migration, (11) Construction of a model for self-propelling deformable domain, (12) Experimental realization of self-propelled optical Janus particles.
|
Research Products
(13 results)
