研究課題/領域番号 |
21K20350
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研究種目 |
研究活動スタート支援
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配分区分 | 基金 |
審査区分 |
0202:物性物理学、プラズマ学、原子力工学、地球資源工学、エネルギー学およびその関連分野
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研究機関 | 東京大学 |
研究代表者 |
Lama Hisay 東京大学, 大学院理学系研究科(理学部), 特任研究員 (60906147)
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研究期間 (年度) |
2021-08-30 – 2024-03-31
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研究課題ステータス |
交付 (2022年度)
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配分額 *注記 |
3,120千円 (直接経費: 2,400千円、間接経費: 720千円)
2022年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
2021年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
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キーワード | Active Matter / Optical Tweezer / Bacteria / Non-equilibrium |
研究開始時の研究の概要 |
First, I plan to design the experimental setup to investigate the variation in elastic property of a cell membrane and decipher the explicit role of active forces on them.
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研究実績の概要 |
The purpose of this project is to characterize the dense active system e.g. bacterial bath and investigate its micro and macroscopic properties. We specifically intend to build a model experimental system that can be used to study them. To begin with, we focussed on developing the model experiments and we successfully set up the optical tweezer. In the process, we recently discovered that at the high density the bacterial cells exhibit the kinetically arrested phase. We intend to investigate the spatiotemporal dynamics of these phases as a function of various physical control parameters (density, confinement and mobility).
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現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
We would like to measure the activity driven effect and bulk properties (e.g. viscosity) of the bacterial dispersion using an optical tweezer. At the moment we had set up the single trap optical tweezer and tested it with standard specimens such as a tracer particle in an active bath. Our experimental set up is yet to be calibrated for the robust measurement, and we are still working on it and troubleshooting the technical difficulties.
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今後の研究の推進方策 |
For a time-dependent study of the bacterial system, we intend to calibrate the optical tweezer and augment the Galvanoscanner that will allow us to investigate the dynamics at a short time interval. Our optical tweezer is still not complete, in the coming fiscal year we plan to purchase the optical turret, and an intensity modulator for controlling laser intensity.
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