Catalytic dimer nanomotors: continuum theory and microscopic dynamics

Soft Matter
Shang Yik Reigh, Raymond Kapral

Abstract

Synthetic chemically-powered motors with various geometries have potentially new applications involving dynamics on very small scales. Self-generated concentration and fluid flow fields, which depend on geometry, play essential roles in motor dynamics. Sphere-dimer motors, comprising linked catalytic and noncatalytic spheres, display more complex versions of such fields, compared to the often-studied spherical Janus motors. By making use of analytical continuum theory and particle-based simulations we determine the concentration fields, and both the complex structure of the near-field and point-force dipole nature of the far-field behavior of the solvent velocity field that are important for studies of collective motor motion. We derive the dependence of motor velocity on geometric factors such as sphere size and dimer bond length and, thus, show how to construct motors with specific characteristics.

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Citations

Dec 19, 2015·Soft Matter·Jiang-Xing ChenYu-Qiang Ma
Dec 25, 2015·The European Physical Journal. E, Soft Matter·Thomas D Montenegro-JohnsonEric Lauga
Nov 17, 2015·The Journal of Chemical Physics·Peter H Colberg, Raymond Kapral
Apr 24, 2015·The Journal of Chemical Physics·Bryan Robertson, Raymond Kapral
May 18, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Fengchang YangRui Qiao
Oct 5, 2016·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Shang Yik ReighRaymond Kapral
Mar 28, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Ran NiuThomas Palberg
Apr 13, 2018·Soft Matter·Maciej LisickiEric Lauga
Feb 1, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M N PopescuS Dietrich
Jul 31, 2018·Soft Matter·Akhil VarmaSébastien Michelin
Aug 4, 2018·Soft Matter·Ran Niu, Thomas Palberg
Oct 5, 2018·Chemical Communications : Chem Comm·Tingting YuPeer Fischer
Jan 15, 2018·The Journal of Chemical Physics·Sergey D Traytak, Denis S Grebenkov
Jan 7, 2020·Soft Matter·Shang Yik ReighRaymond Kapral
Jul 10, 2020·The Journal of Chemical Physics·Jiyuan WangRaymond Kapral
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Sep 13, 2018·Accounts of Chemical Research·Bryan RobertsonRaymond Kapral
Nov 18, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Benno Liebchen, Aritra K Mukhopadhyay

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