Project/Area Number |
23655106
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Multi-year Fund |
Research Field |
Polymer chemistry
|
Research Institution | Kyushu University |
Principal Investigator |
TANAKA Keiji 九州大学, 大学院・工学研究院, 教授 (20325509)
|
Co-Investigator(Kenkyū-buntansha) |
SHUNDO Atsuomi 九州大学, 大学院・工学研究院, 助教 (40585915)
|
Project Period (FY) |
2011 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 光ピンセット / 粒子追跡法 / マイクロレオロジ- / ソフトマテリアル / 粘弾性関数 / 不均一性 |
Research Abstract |
A novel methodology using optical tweezers for local rheological measurements in soft materials has been established. By using this, we have found that there exists a spatial heterogeneity in the viscoelastic properties of a supramolecular hydrogel, a lyotropic liquid crystal, etc. Notably, the heterogeneity in a worm-like micelle solution strongly depended on the measurement frequency. Also, it was found that a sol-to-gel transition process of a supramolecular polymer solution was accompanied by a homogenization of the physical properties.
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