Periodic Oscillatory Motion of a Self-Propelled Motor Driven by Decomposition of H₂O₂ by Catalase

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• 作者：Prof. Satoshi Nakata ; Mio Nomura ; Hiroya Yamamoto ; Prof. Shunsuke Izumi ; Prof. Nobuhiko J. Suematsu ; Prof. Yumihiko Ikura and Prof. Takashi Amemiya
• 刊名：Angewandte Chemie International Edition
• 出版年：2017
• 出版时间：January 16, 2017
• 年：2017
• 卷：56
• 期：3
• 页码：861-864
• 全文大小：834K
• ISSN：1521-3773

文摘

A self-propelled motor driven by the enzymatic reaction of catalase adsorbed onto a filter paper floating on an aqueous solution of H₂O₂ was used to study nonlinear behavior in the motor's motion. An increase in the concentration of H₂O₂ resulted in a change from no motion to irregular oscillatory motion, periodic oscillatory motion, and continuous motion. The mechanisms underlying oscillation and mode bifurcation are discussed based on experimental results on O₂ bubble formation and growth on the underside of the motor.