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We employ computer simulations to unveil the translational and rotationaldynamics of the self-driven chemically symmetric and asymmetric rigid dumbbellsin two-dimensional polymer gel. Our results show that activity or theself-propulsion always enhances the dynamics of the dumbbells. Making theself-propelled dumbbell chemically asymmetric leads to further enhancement indynamics. Additionally, the direction of self-propulsion is a key factor forthe chemically asymmetric dumbbells, where self-propulsion towards thenon-sticky half of the dumbbell results in faster translational and rotationaldynamics compare to the case with the self-propulsion towards the sticky halfof the dumbbell. Our analyses show that both the symmetric and asymmetricpassive rigid dumbbells get trapped inside the mesh of the polymer gel, but thechemical asymmetry always facilitates mesh to mesh motion of the dumbbell andit is even more pronounced when the dumbbell is self-propelled. This resultsmultiple peaks in the van Hove function with increasing self-propulsion. In anutshell, we believe that our in silico study can guide the researchers designefficient artificial microswimmers possessing potential applications insite-specific delivery.

Chemically symmetric and asymmetric self-driven rigid dumbbells in 2D polymer gel