Unknown

Dataset Information

0

Noncentral forces mediated between two inclusions in a bath of active Brownian rods.


ABSTRACT: Using Brownian Dynamics simulations, we study effective interactions mediated between two identical and impermeable disks (inclusions) immersed in a bath of identical, active (self-propelled), Brownian rods in two spatial dimensions, by assuming that the self-propulsion axis of the rods may generally deviate from their longitudinal axis. When the self-propulsion is transverse (perpendicular to the rod axis), the accumulation of active rods around the inclusions is significantly enhanced, causing a more expansive steric layering (ring formation) of the rods around the inclusions, as compared with the reference case of longitudinally self-propelling rods. As a result, the transversally self-propelling rods also mediate a significantly longer ranged effective interaction between the inclusions. The bath-mediated interaction arises due to the overlaps between the active-rod rings formed around the inclusions, as they are brought into small separations. When the self-propulsion axis is tilted relative to the rod axis, we find an asymmetric imbalance of active-rod accumulation around the inclusion dimer. This leads to a noncentral interaction, featuring an anti-parallel pair of transverse force components and, hence, a bath-mediated torque on the dimer.

SUBMITTER: Sebtosheikh M 

PROVIDER: S-EPMC8630027 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC8793860 | biostudies-literature
| S-EPMC10728076 | biostudies-literature
| S-EPMC4039130 | biostudies-literature
| S-EPMC7866026 | biostudies-literature
| S-EPMC7141648 | biostudies-literature
| S-EPMC9358709 | biostudies-literature
| S-EPMC4907695 | biostudies-literature
2021-05-22 | GSE171076 | GEO
| S-EPMC7735740 | biostudies-literature
| S-EPMC5714313 | biostudies-literature