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	2013/07
形態種別	学術雑誌
査読	査読あり
標題	Collective motion of symmetric camphor papers in an annular water channel.
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	88(1),pp.012911
著者・共著者	Ikura Yumihiko S, Heisler Eric, Awazu Akinori, Nishimori Hiraku, Nakata Satoshi
概要	This study explores the collective motion of symmetric self-propelled objects driven by surface tension differences, moving spontaneously around an annular water channel. The objects interact through a camphor layer on the water surface. Two distinct collective motion modes—discrete and continuous density waves—emerge depending on the number of objects. These modes are analyzed through their local and global dynamics, revealing differences in how camphor concentration distributes within the channel. The study concludes that the key distinction between the two modes lies in the driving mechanism: the force that pushes a camphor paper away from clusters, which generates and sustains the density waves.
DOI	10.1103/PhysRevE.88.012911
ISSN	1550-2376
PMID	23944542