This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.124.068001 in citations.
Please use the identifier: http://hdl.handle.net/2128/24446 in citations.
Enhanced Rotational Motion of Spherical Squirmer in Polymer Solutions
Enhanced Rotational Motion of Spherical Squirmer in Polymer Solutions
The rotational diffusive motion of a self-propelled, attractive spherical colloid immersed in a solution of self-avoiding polymers is studied by mesoscale hydrodynamic simulations. A drastic enhancement of the rotational diffusion by more than an order of magnitude in the presence of activity is obt...
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Personal Name(s): | Qi, Kai (Corresponding author) |
---|---|
Westphal, Elmar / Gompper, Gerhard / Winkler, Roland G. | |
Contributing Institute: |
Theorie der Weichen Materie und Biophysik; ICS-2 JARA - HPC; JARA-HPC |
Published in: | Physical review letters, 124 (2020) 6, S. 068001 |
Imprint: |
College Park, Md.
APS
2020
|
DOI: |
10.1103/PhysRevLett.124.068001 |
PubMed ID: |
32109107 |
Document Type: |
Journal Article |
Research Program: |
Collective Dynamics of Microswimmers Functional Macromolecules and Complexes |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/24446 in citations.
The rotational diffusive motion of a self-propelled, attractive spherical colloid immersed in a solution of self-avoiding polymers is studied by mesoscale hydrodynamic simulations. A drastic enhancement of the rotational diffusion by more than an order of magnitude in the presence of activity is obtained. The amplification is a consequence of two effects, a decrease of the amount of adsorbed polymers by active motion and an asymmetric encounter with polymers on the squirmer surface, which yields an additional torque and random noise for the rotational motion. Our simulations suggest a way to control the rotational dynamics of squirmer-type microswimmers by the degree of polymer adsorption and system heterogeneity. |