Official web site of Takeuchi Lab, Univ. Tokyo

Rigidity transition of a highly compressible granular medium

Samuel Poincloux and Kazumasa A. Takeuchi,
Proc. Natl. Acad. Sci. USA 121, e2408706121 (2024).
[#33, arXiv:2404.09773, 9+11 pages]

♦ Press released "Researchers uncover what makes large numbers of “squishy” grains start flowing" [link]

Emergence of bacterial glass

Hisay Lama, Masahiro J. Yamamoto, Yujiro Furuta, Takuro Shimaya, and Kazumasa A. Takeuchi,
PNAS Nexus 3, pgae238 (2024).
[#32, arXiv:2205.10436, 8+9 pages]

  (17269KB) (740KB)

♦Press released "Bacteria form glasslike state: Densely packed E. coli form an immobile material similar to colloidal glass" [link]

Vortex reversal is a precursor of confined bacterial turbulence

Daiki Nishiguchi, Sora Shiratani, Kazumasa A. Takeuchi, and Igor S. Aranson,
preprint.
[#31, arXiv:2407.05269, 8+15 pages]

  (12530KB)

Smectic-like bundle formation of planktonic bacteria upon nutrient starvation

Takuro Shimaya and Kazumasa A. Takeuchi,
preprint.
[#30, arXiv:2407.05031, 12+6 pages]

  (17163KB)

Approach and rotation of reconnecting topological defect lines in liquid crystal

Yohei Zushi, Cody D. Schimming, and Kazumasa A. Takeuchi,
Phys. Rev. Res. 6, 023284 (2024).
[#29, arXiv:2404.01480, 10 pages]

  (1426KB)

Partial yet definite emergence of the Kardar-Parisi-Zhang class in isotropic spin chains

Kazumasa A. Takeuchi, Jacopo De Nardis, Ofer Busani, Patrik L. Ferrari, and Romain Vasseur,
preprint.
[#28, arXiv:2406.07150, 6+4 pages]

  (1015KB)

Deciphering Long-Range Order in Active Matter: Insights from Swimming Bacteria in Quasi-2D and Electrokinetic Janus Particles

Daiki Nishiguchi,
J. Phys. Soc. Jpn. 92, 121007 (2023).
[#27, arXiv:2306.17689, 17 pages]

Route to turbulence via oscillatory states in polar active fluid under confinement

Sora Shiratani, Kazumasa A. Takeuchi, and Daiki Nishiguchi,
preprint.
[#26, arXiv:2304.03306, 15 pages]

  (9242KB)

Quasi-two-dimensional bacterial swimming around pillars: Enhanced trapping efficiency and curvature dependence

Yuki Takaha and Daiki Nishiguchi,
Phys. Rev. E 107, 014602 (2023).
[#25, arXiv:2203.16017, 15+2 pages]

  (2464KB)

Tilt-induced polar order and topological defects in growing bacterial populations

Takuro Shimaya and Kazumasa A. Takeuchi,
PNAS Nexus 1, pgac269 (2022).
[#24, arXiv:2106.10954, 11+14 pages]

  (2179KB)

♦ Press released "Microbial 'Jenga' : how bacteria stack" [link]

Scaling and spontaneous symmetry restoring of topological defect dynamics in liquid crystal

Yohei Zushi and Kazumasa A. Takeuchi,
Proc. Natl. Acad. Sci. USA 119, e2207349119 (2022).
[#23, arXiv:2110.00442, 7+11 pages]

  (1625KB)

Active colloid with externally induced periodic bipolar motility and its cooperative motion

Airi N. Kato, Kazumasa A. Takeuchi, and Masaki Sano,
Soft Matter 18, 5435-5445 (2022).
[#22, arXiv:2203.12882, 11 pages]

  (6559KB)

Algebraic correlations and anomalous fluctuations in ordered flocks of Janus particles fueled by an AC electric field

Junichiro Iwasawa, Daiki Nishiguchi, Masaki Sano,
Phys. Rev. Res. 3, 043104 (2021).
[#21, arXiv:2011.14548, 10+5 pages]

  (3688KB)

Scale invariance of cell size fluctuations in starving bacteria

Takuro Shimaya, Reiko Okura, Yuichi Wakamoto, and Kazumasa A. Takeuchi,
Commun. Phys. 4, 238 (2021).
[#20, arXiv:2004.04903, 12+23 pages]

  (1320KB)

Initial perturbation matters: implications of geometry-dependent universal Kardar-Parisi-Zhang statistics for spatiotemporal chaos

Yohsuke T. Fukai and Kazumasa A. Takeuchi,
Chaos 31, 111103 (2021).
[#19, arXiv:2109.02264, 8+4 pages]

  (4504KB)

♦ Selected for Editor's Pick.
♦ Fast Track article.

Phase-ordering kinetics in the Allen-Cahn (Model A) class: universal aspects elucidated by electrically-induced transition in liquid crystals

Renan A. L. Almeida and Kazumasa A. Takeuchi,
Phys. Rev. E 104, 054103 (2021).
[#18, arXiv:2107.09043, 18 pages]

  (2126KB)

Algebraic winged pair correlations of dilute active Brownian particles

Alexis Poncet, Olivier Bénichou, Vincent Démery, Daiki Nishiguchi,
Phys. Rev. E 103, 012605 (2021).
[#17, arXiv:2006.08202, 13 pages]

  (2929KB)

Direct Evidence for Universal Statistics of Stationary Kardar-Parisi-Zhang Interfaces

Takayasu Iwatsuka, Yohsuke T. Fukai, Kazumasa A. Takeuchi,
Phys. Rev. Lett. 124, 250602 (2020).
[#16, arXiv:2004.11652, 6 pages]

  (1004KB)

Organizing bacterial vortex lattices by periodic obstacle arrays

Henning Reinken, Daiki Nishiguchi, Sebastian Heidenreich, Andrey Sokolov, Markus Bär, Sabine H. L. Klapp, Igor S. Aranson,
Commun. Phys. 3, 76 (2020).
[#15, 9 pages]

Kardar-Parisi-Zhang Interfaces with Curved Initial Shapes and Variational Formula

Yohsuke T. Fukai and Kazumasa A. Takeuchi,
Phys. Rev. Lett. 124, 060601 (2020).
[#14, arXiv:1909.11920, 6+5 pages]

  (676KB)

Universal Critical Behavior at a Phase Transition to Quantum Turbulence

Masahiro Takahashi, Michikazu Kobayashi, and Kazumasa A. Takeuchi,
preprint.
[#4, arXiv:1609.01561]

  (1316KB)