ニシモリ　ヒラク   NISHIMORI HIRAKU   西森　拓    所属   明治大学研究・知財戦略機構・農場  研究・知財戦略機構    職種   特任教授
言語種別	英語
発行・発表の年月	2015/08
形態種別	学術雑誌
査読	査読あり
標題	Bifurcation phenomena of two self-propelled camphor disks on an annular field depending on system length.
執筆形態	共著(筆頭者以外)
掲載誌名	Physical review. E, Statistical, nonlinear, and soft matter physics
掲載区分	国外
巻・号・頁	92(2),pp.022910
著者・共著者	Nishi Kei, Wakai Ken, Ueda Tomoaki, Yoshii Miyu, Ikura Yumihiko S, Nishimori Hiraku, Nakata Satoshi, Nagayama Masaharu
概要	This study investigates synchronized motion and mode bifurcation of two symmetric self-propelled objects—camphor disks—on an annular water channel, both numerically and experimentally. The model combines Newton’s equation of motion, driven by surface tension differences, with a reaction-diffusion equation for camphor concentration. Simulations revealed various dynamical behaviors, including four synchronized modes: reversal oscillation, stop-and-move rotation, equally spaced rotation, and clustered rotation. These modes were also observed experimentally by varying the channel diameter. The bifurcation and coexistence of these modes were analyzed in terms of disk number density. The results demonstrate that the model effectively captures key features of synchronization, collective motion, and mode transitions.
DOI	10.1103/PhysRevE.92.022910
ISSN	1550-2376
PMID	26382479