TITLE

Autonomously motile catalytic nanomotors by bubble propulsion

AUTHOR(S)
Gibbs, J. G.; Zhao, Y.-P.
PUB. DATE
April 2009
SOURCE
Applied Physics Letters;4/20/2009, Vol. 94 Issue 16, p163104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
38225330

 

Related Articles

  • Stability of bubbles in a Hele�Shaw cell. Tanveer, S.; Saffman, P. G. // Physics of Fluids (00319171);Sep87, Vol. 30 Issue 9, p2624 

    The linear stability of steadily moving bubbles in a Hele�Shaw cell is investigated. It is shown analytically that without the effect of surface tension, the bubbles are linearly unstable with the stability operator having a continuous spectrum. For small bubbles that are circular,...

  • A rising bubble in a tube. Levine, Herbert; Yang, Yumin // Physics of Fluids A;Apr90, Vol. 2 Issue 4, p542 

    The rise of an infinitely long bubble in a vertical cylindrical tube full of inviscid fluid is studied. It is demonstrated numerically that the rising velocity of the bubble is determined by the surface tension through a solvability mechanism. The numerical results are in good agreement with the...

  • Infinite stream of Hele�Shaw bubbles. Burgess, D.; Tanveer, S. // Physics of Fluids A;Mar91, Vol. 3 Issue 3, p367 

    Exact solutions are presented for a steady stream of bubbles in a Hele�Shaw cell when the effect of surface tension is neglected. These solutions form a three-parameter family. For specified area and distance between bubbles, the speed of the bubble remains arbitrary when surface tension is...

  • The singularity at the tip of the rising plane bubble: The case of nonzero surface tension. Daripa, Prabir // Physics of Fluids;Apr94, Vol. 6 Issue 4, p1615 

    In the past pointed bubbles have been obtained numerically in the presence of surface tension. In this paper it is proven that if such pointed bubbles do exist in the presence of surface tension, then the singularity at the corner must be an irregular singular point. The generality and...

  • Singularity formation in Hele-Shaw bubbles. Almgren, Robert // Physics of Fluids;Feb96, Vol. 8 Issue 2, p344 

    Provides numerical and analytic evidence for the formation of a singularity driven only by surface tension in the mathematical model describing a two-dimensional Hele-Shaw cell with no air injection. Full Hele-Shaw problem; Lubrication approximation.

  • A numerical study of the effect of surface tension and noise on an expanding Hele—Shaw bubble. Dai, Wei-Shen; Shelley, Michael J. // Physics of Fluids A;Sep93, Vol. 5 Issue 9, p2131 

    In this paper, the dynamics of an interface under the influence of surface tension is studied numerically for flow in the Hele–Shaw cell, where the interface separates an expanding bubble of inviscid fluid from a displaced viscous fluid. Of special interest is the long–time...

  • New solutions for steady bubbles in a Hele—Shaw cell. Tanveer, S. // Physics of Fluids (00319171);Mar87, Vol. 30 Issue 3, p651 

    Exact solutions are presented for steadily moving bubbles in a Hele-Shaw cell when the effect of surface tension is neglected. These solutions form a three-parameter family. For specified area, both the speed of the bubble and the distance of its centroid from the channel centerline remain...

  • Synthesis and Properties of Dodecyldiethoxylamine Oxide. Wang, Ruitao; Li, Yunling; Li, Qiuxiao // Journal of Surfactants & Detergents;Jul2013, Vol. 16 Issue 4, p509 

    Dodecyldiethoxylamine oxide (DDEAO) was synthesized by the reaction of dodecyldiethoxylamine with hydrogen peroxide in water as the solvent. Surface activity, wetting ability and emulsifying capacity were investigated and compared with that of dodecyldimethylamine oxide (DDMAO). Results indicate...

  • Bubble nucleation in rhyolite and dacite melts: temperature dependence of surface tension. Gardner, James; Ketcham, Richard // Contributions to Mineralogy & Petrology;Nov2011, Vol. 162 Issue 5, p929 

    Surface tension ( σ) profoundly influences the ability of gas bubbles to nucleate in silicate melts. To determine how temperature impacts σ, experiments were carried out in which high-silica rhyolite melts with 5 wt% dissolved water were decompressed at temperatures that ranged from 775 to...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics