title: Periodic Oscillatory Motion of a Self-Propelled Motor Driven by Decomposition of H2O2by Catalase.
abstract: A self-propelled motor driven by the enzymatic reaction of catalase adsorbed onto a filter paper floating on an aqueous solution of H2O2was used to study nonlinear behavior in the motor's motion. An increase in the concentration of H2O2resulted 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 O2bubble formation and growth on the underside of the motor.
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Nakata
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
authors.forename: Mio
authors.initials: M
authors.lastname: Nomura
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
authors.forename: Hiroya
authors.initials: H
authors.lastname: Yamamoto
authors.affiliation: Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Izumi
authors.affiliation: School of Interdisciplinary Mathematical Sciences, Meiji University, 4-21-1 Nakano, Tokyo, 164-8525, Japan.|Meiji Institute of Advanced Study of Mathematical Sciences(MIMS), Meiji University, 4-21-1 Nakano, Tokyo, 164-8525, Japan.
authors.forename: Nobuhiko J
authors.initials: NJ
authors.lastname: Suematsu
authors.affiliation: School of Interdisciplinary Mathematical Sciences, Meiji University, 4-21-1 Nakano, Tokyo, 164-8525, Japan.|Meiji Institute of Advanced Study of Mathematical Sciences(MIMS), Meiji University, 4-21-1 Nakano, Tokyo, 164-8525, Japan.
authors.forename: Yumihiko
authors.initials: Y
authors.lastname: Ikura
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Amemiya
keywords: catalase; enzymatic catalysis; micromotors; periodic oscillatory motion; self-propelled motion