In silico studies of active probe dynamics in crowded media

L Theeyancheri, R Sahoo, P Kumar, R Chakrabarti - ACS omega, 2022 - ACS Publications
Active systems are made of agents, each of which takes energy from the environment and
converts it to directed motion. Therefore, by construction, these systems function out of …

Dynamics of self-propelled tracer particles inside a polymer network

P Kumar, R Chakrabarti - Physical Chemistry Chemical Physics, 2023 - pubs.rsc.org
The transport of tracer particles through mesh-like environments such as biological
hydrogels and polymer matrices is ubiquitous in nature. These tracers can be passive, such …

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 …

Electro-optical study of the anomalous rotational diffusion in polymer solutions

S Martín-Martín, MM Ramos-Tejada… - …, 2023 - ACS Publications
Brownian diffusion of spherical nanoparticles is usually exploited to ascertain the
rheological properties of complex media. However, the behavior of the tracer particles is …

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 …

Non-equilibrium tracer dynamics in oscillating active gel

RL Reserva, JLDC Filipinas, MJY Jerez… - Physica A: Statistical …, 2022 - Elsevier
Non-equilibrium features in active gels are commonly assessed by the van Hove distribution
(VHD) of tracer bead displacement. For instance, pulsed stress is shown to cause side …

Optothermally Induced Active and Chiral Motion of the Colloidal Structures

R Chand, A Shukla, S Boby, GV Kumar - arXiv preprint arXiv:2411.12488, 2024 - arxiv.org
Artificial soft matter systems have appeared as important tools to harness mechanical motion
for microscale manipulation. Typically, this motion is driven either by the external fields or by …

Reaction-induced molecular dancing and boosted diffusion of enzymes

H Kitahata, AS Mikhailov - Journal of the Physical Society of Japan, 2023 - journals.jps.jp
A novel mechanism of reaction-induced active molecular motion, not involving any kind of
self-propulsion, is proposed and analyzed. Because of the momentum exchange with the …

[HTML][HTML] Dynamics of semiflexible ring polymer in chiral Brownian particles bath

X Zhou, Y Wang, B Xu, Y Liu, D Lu, J Luo, Z Yang - AIP Advances, 2023 - pubs.aip.org
Molecular dynamics simulations are used to investigate the dynamic behavior of ring
polymer in a bath containing a high concentration of chiral Brownian particles. The chiral …