Active dynamics of linear chains and rings in porous media

To understand the dynamical and conformational properties of deformable active agents in porous media, we computationally investigate the dynamics of linear chains and rings made of active Brownian monomers. In porous media, flexible linear chains and rings always migrate smoothly and undergo activity-induced swelling. However, semiflexible linear chains though navigate smoothly, shrink at lower activities, followed by swelling at higher activities, while semiflexible rings exhibit a contrasting behavior. Semiflexible rings shrink, get trapped at lower activities, and escape at higher activities. This demonstrates how activity and topology interplay and control the structure and dynamics of linear chains and rings in porous media. We envision that our study will shed light on understanding the mode of transport of shape-changing active agents in porous media.

Automated summary

To study the behavior of deformable active agents in porous media, we computationally investigate the dynamics of linear chains and rings made of active Brownian monomers. We find that flexible linear chains and rings migrate smoothly and undergo swelling, while semiflexible linear chains shrink at lower activities and swell at higher activities. Semiflexible rings, on the other hand, shrink and get trapped at lower activities, but escape at higher activities. This demonstrates the interplay between activity and topology in controlling the structure and dynamics of linear chains and rings in porous media.