| 研究課題/領域番号 |
22K14738
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分35020:高分子材料関連
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| 研究機関 | 沖縄科学技術大学院大学 |
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研究代表者 |
CALABRESE Vincenzo 沖縄科学技術大学院大学, マイクロ・バイオ・ナノ流体ユニット, ポストドクトラルスカラー (40895413)
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| 研究期間 (年度) |
2022-04-01 – 2024-03-31
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| 研究課題ステータス |
完了 (2023年度)
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| 配分額 *注記 |
3,380千円 (直接経費: 2,600千円、間接経費: 780千円)
2023年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2022年度: 2,080千円 (直接経費: 1,600千円、間接経費: 480千円)
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| キーワード | polymer / colloids / rheology / colloidal rods / polymer solution / relaxation time / polymer dynamics / Rheology / Colloid / Polymer dynamics / Microfluidics |
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| 研究開始時の研究の概要 |
In the first part of the project, the candidate will focus on understanding the effect of polymer crowding on the flow-induced orientation of tracer colloidal-rods upon simple deformation rates (shearing and extension).
In the second part of the project, more complex flow scenarios will be explored.
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| 研究実績の概要 |
The candidate has managed to performe an extensive characterisation of polymer and rod-like colloids in shear and extension in Newtonian solvents. The main output of the research is that the polymer and rod-like colloid dynamics in shear and extensions are different and strongly depends on their flexibility. Another important output of the research regards the onset of aliment of rod-like colloids in crowded polymer solutions. We find that the polymer dynamics govern the onset of shear-induced alignment of colloidal rods suspended in polymer solutions, and the control parameter for the alignment of rods is the Weissenberg number, quantifying the elastic response of the polymer to an imposed flow.
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