Kazumasa A. Takeuchi (Univ. Tokyo)

Bacterial glass

An interesting question in active matter physics is what states of matter may arise in active matter and how different they are from thermal systems. In this seminar, I will talk about our recent experimental attempt [1] to realize a glassy state of bacterial populations, using a microfluidic device [2] that can maintain uniform growth conditions even for dense populations. We characterize glassy properties of dense bacterial populations, such as dramatic dynamic slowdown and dynamic heterogeneity. Comparing with thermal systems, we argue a possible role of collective motion and cell shape therein.

[1] H. Lama, M. Yamamoto, Y. Furuta, T. Shimaya, and K. A. Takeuchi, to appear.
[2] T. Shimaya, R. Okura, Y. Wakamoto, and K. A. Takeuchi, Commun. Phys. 4, 238 (2021). https://doi.org/10.1038/s42005-021-00739-5

Uniquement par zoom

https://us06web.zoom.us/j/84777576669?pwd=akZua0tiT0hmRnhNVGE5dE9jMzdoZz09

Meeting ID: 847 7757 6669
Passcode: 597796