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

Abstract

A self-propelled motor driven by the enzymatic reaction of catalase adsorbed onto a filter paper floating on an aqueous solution of H O was used to study nonlinear behavior in the motor's motion. An increase in the concentration of H O 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 O bubble formation and growth on the underside of the motor.

Evolution of Self‐Propelled Objects: From the Viewpoint of Nonlinear Science

“…[1][2][3][4][95][96][97][98][99][100][101] Most of these studies focus on miniaturization likem icromotors and functionalization such as aJ anus particle. [102] At the interface of catalase paper and H 2 O 2 aqueous solution,a ne nzymatic reaction occurs. [102,103] When af ilter paper containing catalase is placed on aH 2 O 2 aqueouss olution, three types motion,t hat is, irregular oscillation, periodic oscillation, and continuousm otion occur at lower,m iddle, and higher concentrationso fH 2 O 2 ,r espectively.…”

“…Recently,s elf-propelled objects driven by decomposition of H 2 O 2 were extended to exhibit nonlinearb ehavior in their motions. [102,103] When af ilter paper containing catalase is placed on aH 2 O 2 aqueouss olution, three types motion,t hat is, irregular oscillation, periodic oscillation, and continuousm otion occur at lower,m iddle, and higher concentrationso fH 2 O 2 ,r espectively. [102] At the interface of catalase paper and H 2 O 2 aqueous solution,a ne nzymatic reaction occurs.…”

“…[102,103] When af ilter paper containing catalase is placed on aH 2 O 2 aqueouss olution, three types motion,t hat is, irregular oscillation, periodic oscillation, and continuousm otion occur at lower,m iddle, and higher concentrationso fH 2 O 2 ,r espectively. [102] At the interface of catalase paper and H 2 O 2 aqueous solution,a ne nzymatic reaction occurs. On the other hand, af ilter paper containing MnO 2 that is incapable of enzymatic reactione xhibitsn op eriodic oscillation.…”

Marangoni-driven flower-like patterning of an evaporating drop spreading on a liquid substrate

“…Nanometer- to millimeter-sized objects undergoing spontaneous directional motion, deformation, or topological changes, generically classified as active matter 1 , 2 , are expected to find a broad range of applications in the miniaturization of many devices. In such systems, energy is supplied to the moving object by an external source 3 or by making it interact with its surroundings 4 , 5 . Drops spreading on a liquid substrate may fall into the second category when surface tension gradients take place, owing to phase change or to the presence of surfactants.…”

Geometry Design, Principles and Assembly of Micromotors

“…Autonomous trajectories of micromotors can be controlled by the balance of motive–drag forces, shapes and geometrical asymmetry [ 102 , 103 ], effect of catalyst distribution [ 104 ], gravitaxis and separation phenomena for mass-anisotropic self-propelling colloids [ 105 ]. Interesting observations of periodic oscillatory motion driven by decomposition of H 2 O 2 using catalase was reported [ 106 ]. Several groups observed that catalytic nanorods could spontaneously turn and tumble, which is similar to swimming of bacteria.…”