Anomalous diffusion of active Brownian particles in responsive elastic gels: Nonergodicity, non-Gaussianity, and distributions of trapping times

K Goswami, AG Cherstvy, A Godec, R Metzler - Physical Review E, 2024 - APS
Understanding actual transport mechanisms of self-propelled particles (SPPs) in complex
elastic gels—such as in the cell cytoplasm, in in vitro networks of chromatin or of F-actin …

Effect of confinement and topology: 2-TIPS vs. MIPS

N Venkatareddy, J Mandal, PK Maiti - Soft Matter, 2023 - pubs.rsc.org
2-TIPS (two temperature induced phase separation) refers to the phase separation
phenomenon observed in mixtures of active and passive particles which are modelled using …

Nonequilibrium diffusion of active particles bound to a semiflexible polymer network: Simulations and fractional Langevin equation

HT Han, S Joo, T Sakaue, JH Jeon - The Journal of Chemical Physics, 2023 - pubs.aip.org
In a viscoelastic environment, the diffusion of a particle becomes non-Markovian due to the
memory effect. An open question concerns quantitatively explaining how self-propulsion …

Trapped tracer in a non-equilibrium bath: dynamics and energetics

K Goswami, R Metzler - Soft Matter, 2023 - pubs.rsc.org
We study the dynamics of a tracer that is elastically coupled to active particles being kept at
two different temperatures, as a prototype of tracer dynamics in a non-equilibrium bath …

Active doping controls the mode of failure in dense colloidal gels

T Zhou, JF Brady - Proceedings of the National Academy of Sciences, 2024 - pnas.org
Mechanical properties of disordered materials are governed by their underlying free energy
landscape. In contrast to external fields, embedding a small fraction of active particles within …

Dynamics of a spherical self-propelled tracer in a polymeric medium: interplay of self-propulsion, stickiness, and crowding

RS Yadav, C Das, R Chakrabarti - Soft Matter, 2023 - pubs.rsc.org
We employ computer simulations to study the dynamics of a self-propelled spherical tracer
particle in a viscoelastic medium, made of a long polymer chain. Here, the interplay between …

Active Diffusion of Self-Propelled Particles in Semiflexible Polymer Networks

Y Kim, WK Kim, JH Jeon - Macromolecules, 2024 - ACS Publications
Mesh-like structures, such as mucus gels or cytoskeleton networks, are ubiquitous in
biological systems. These intricate structures are composed of cross-linked, semiflexible …

Collective dynamics of active dumbbells near a circular obstacle

C Tiwari, SP Singh - Soft Matter, 2024 - pubs.rsc.org
In this article, we present the collective dynamics of active dumbbells in the presence of a
static circular obstacle using Brownian dynamics simulation. The active dumbbells …

Constrained dynamics of DNA oligonucleotides in phase-separated droplets

A Singh, S Thutupalli, M Kumar, S Ameta - Biophysical Journal, 2024 - cell.com
Understanding the dynamics of biomolecules in complex environments is crucial for
elucidating the effect of condensed and heterogeneous environments on their functional …

Escape dynamics of a self-propelled nanorod from circular confinements with narrow openings

P Kumar, R Chakrabarti - Soft Matter, 2023 - pubs.rsc.org
We perform computer simulations to explore the escape dynamics of a self-propelled
(active) nanorod from circular confinements with narrow opening (s). Our results clearly …