| 研究課題/領域番号 |
21K20350
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| 研究機関 | 東京大学 |
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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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| キーワード | Active Matter / Optical Tweezer |
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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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| 次年度使用額が生じた理由 |
We plan to buy an equipment for our experiments, because we are waiting for the feedback from the experiments.
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