スエマツ　ノブヒコ   SUEMATSU Nobuhiko   末松　信彦    所属   明治大学  総合数理学部    職種   専任教授
言語種別	英語
発行・発表の年月	2021/08
形態種別	学術雑誌
査読	査読あり
標題	Spontaneous Mode Switching of Self-Propelled Droplet Motion Induced by a Clock Reaction in the Belousov-Zhabotinsky Medium.
執筆形態	共著(筆頭者)
掲載誌名	The journal of physical chemistry letters
掲載区分	国外
巻・号・頁	12(31),pp.7526-7530
総ページ数	5
担当区分	筆頭著者,責任著者
著者・共著者	Suematsu Nobuhiko J, Mori Yoshihito, Amemiya Takashi, Nakata Satoshi
概要	We demonstrated that the chemical conditions inside self-propelled aqueous droplets were changed systematically, indicating that random motion appeared at higher concentrations of oxidants, which were H2SO4 and BrO3-, and ballistic motion at lower concentrations. In addition, spontaneous mode switching from ballistic to random motion was successfully demonstrated by adding malonic acid, wherein the initially observed reduced state of the aqueous solution suddenly changed to the oxidized state. Although we only observed one-time transition and have not yet succeeded to realize alternation between ballistic (reduced state) and random motion (oxidized state), such spontaneous transitions are fundamental steps in realizing artificial cells and understanding the fundamental mechanisms of life-like behavior, such as bacterial chemotaxis originating from periodical run-and-tumble motion.
DOI	10.1021/acs.jpclett.1c02079
ISSN	1948-7185
PMID	34346682