Autonomously motile catalytic nanomotors by bubble propulsion

Gibbs, J. G.; Zhao, Y.-P.
April 2009
Applied Physics Letters;4/20/2009, Vol. 94 Issue 16, p163104
Academic Journal
A bubble propulsion model based on catalyzed hydrogen peroxide decomposition and momentum change via O2 bubbles detaching from the catalytic surface is proposed to explain the autonomous motion of catalytic nanomotors. The propelling force closely depends upon the surface tension of the liquid as well as the bulk concentration of hydrogen peroxide, and the model predictions are supported by the experimental data of Pt-coated spherical silica microbead motors.


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