Obstacle-induced giant jammed aggregation of active semiflexible filaments

Abstract

Filaments driven by bound motor proteins and chains of self-propelled colloidal particles are typical example active polymers (APs). Due to deformability, APs exhibit very rich dynamic behaviors and collective assembling...

Non-equilibrium structural and dynamic behaviors of active polymers in complex and crowded environments

“…Moreover, a small number of long cells helps to organize the dynamics of the bacterial colony, with long cells acting as nucleation cites around which aggregates of short, rapidly moving cells can form (figures 16(c) and (d)). For homogeneous active polymers, Wang et al [103] found that their assembly is a two-state system in the presence of a big single obstacle (figures 16(e)-(m)), that is, all filaments either disperse freely in space or gather almost completely together into a giant jammed aggregate attached to the surface of the obstacle. In the absence of the obstacle, an active polymer chain is known to bend and form spiral configuration at low rigidity or strong propulsion [81].…”

Configuration and dynamics of a self-propelled diblock copolymer chain

“…This motivates the interdisciplinary research of polymer physics and active matter. [7][8][9][10][11][12][13][14][15][16][17][18][19] Polymeric active matters or active polymers (APs) are not unusual in living systems. Some examples include microtubules/microfilaments driven by motor proteins, 20,21 DNA/RNA molecules in transcription, 22 slender bacteria, 23 algae or bacteria that can organize into a chain-like structure, 24 and macroscopic worms.…”

“…11 Recently, several studies on APs in contact with obstacles have appeared in the literature. 19,[32][33][34] Active semiflexible polymers are found to form a giant jammed aggregate around a circular obstacle. 19 And, in porous media, flexible APs are observed forming spirals and getting stuck, while stiff ones are found moving smoothly.…”

“…19,[32][33][34] Active semiflexible polymers are found to form a giant jammed aggregate around a circular obstacle. 19 And, in porous media, flexible APs are observed forming spirals and getting stuck, while stiff ones are found moving smoothly. 32 Self-assembly of a block copolymer is a classic problem in polymer physics.…”

Controlling the transport of the mixture involving active and passive rods in confined channel

“…Systems involving self-propelled particles have aroused great interest in non-equilibrium statistical physics [1][2][3][4][5] in recent years. In practice, the self-propelled particles have been utilized for implementations ranging from cargo and drug delivery [6][7][8] to environmental engineering.…”