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Adaptation of Patterns of Motile Filaments under Dynamic Boundary Conditions

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Title: Adaptation of Patterns of Motile Filaments under Dynamic Boundary Conditions
Authors: Inoue, Daisuke Browse this author
Gutmann, Greg Browse this author
Nitta, Takahiro Browse this author
Kabir, Arif Md. Rashedul Browse this author
Konagaya, Akihiko Browse this author
Tokuraku, Kiyotaka Browse this author
Sada, Kazuki Browse this author
Hess, Henry Browse this author
Kakugo, Akira Browse this author →KAKEN DB
Keywords: active matter
collective motion
mechanical stimuli
motor protein
Issue Date: Nov-2019
Publisher: American Chemical Society
Journal Title: ACS nano
Volume: 13
Issue: 11
Start Page: 12452
End Page: 12460
Publisher DOI: 10.1021/acsnano.9b01450
Abstract: Boundary conditions are important for pattern formation in active matter. However, it is still not well-understood how alterations in the boundary conditions (dynamic boundary conditions) impact pattern formation. To elucidate the effect of dynamic boundary conditions on the pattern formation by active matter, we investigate an in vitro gliding assay of microtubules on a deformable soft substrate. The dynamic boundary conditions were realized by applying mechanical stress through stretching and compression of the substrate during the gliding assay. A single cycle of stretch-and-compression (relaxation) of the substrate induces perpendicular alignment of microtubules relative to the stretch axis, whereas repeated cycles resulted in zigzag patterns of microtubules. Our model shows that the orientation angles of microtubules correspond to the direction to attain smooth movement without buckling, which is further amplified by the collective migration of the microtubules. Our results provide an insight into understanding the rich dynamics in self-organization arising in active matter subjected to time-dependent boundary conditions.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS nano, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 角五 彰

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