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	2019/06
形態種別	学術雑誌
査読	査読あり
標題	Chemical Wave Propagation in the Belousov-Zhabotinsky Reaction Controlled by Electrical Potential
執筆形態	共著(筆頭者以外)
掲載誌名	Journal of Physical Chemistry A
掲載区分	国外
巻・号・頁	123,pp.4853-4857
著者・共著者	Masakazu Kuze, Mari Horisaka, Nobuhiko J. Suematsu, Takashi Amemiya, Oliver Steinbock, Satoshi Nakata
概要	© 2019 American Chemical Society. The Belousov-Zhabotinsky (BZ) reaction is an important experimental model for the study of chemical oscillations and waves far from the thermodynamic equilibrium. Earlier studies had observed that individual BZ microbeads can show both global oscillations and traveling waves, but failed to select these different dynamic states. Here, we report experiments, in which this control was achieved by an externally applied electrical potential. The spherical microbeads were first loaded with the catalyst, then immersed into a catalyst-free BZ solution, and finally placed onto a planar platinum electrode. For positive electrical potentials, we observed global oscillations, whereas negative potentials resulted in traveling waves. The spatiooral characteristics of these phenomena are discussed in relation to the activator, HBrO2, which is produced by an electrochemical reaction.
DOI	10.1021/acs.jpca.9b02636
ISSN	10895639
PMID	31094190
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