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June 10, 2005Physical Review Letters788 citationsOpen Access

Propulsion of a Molecular Machine by Asymmetric Distribution of Reaction Products

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RGRamin GolestanianTLTanniemola B. LiverpoolAAArmand Ajdari

Key Points

  • To explore a model for how molecular machines can move using reaction-driven propulsion dynamics.
  • Proposed a simple model for propulsion based on asymmetric distribution of reaction products.
  • Calculated propulsive velocity and velocity fluctuations under various kinetic scenarios.
  • Addressed the influence of hydrodynamic flow on the motion of the device.
  • Demonstrated that propulsive velocity is influenced by the distribution of reaction products.
  • Identified significant velocity fluctuations linked to the varying reaction kinetics.
  • Highlighted the role of hydrodynamic conditions in affecting propulsion dynamics.

Abstract

A simple model for the reaction-driven propulsion of a small device is proposed as a model for (part of) a molecular machine in aqueous media. The motion of the device is driven by an asymmetric distribution of reaction products. The propulsive velocity of the device is calculated as well as the scale of the velocity fluctuations. The effects of hydrodynamic flow as well as a number of different scenarios for the kinetics of the reaction are addressed.

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Cite This Study

Golestanian et al. (2005) studied this question.

synapsesocial.com/papers/6a12988d1292a1e50c3543eehttps://doi.org/10.1103/physrevlett.94.220801
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