English
Related papers

Related papers: Giant Negative Mobility of Janus Particles in a Co…

200 papers

We numerically investigate the escape kinetics of elliptic Janus particles from narrow two-dimensional cavities with reflecting walls. The self-propulsion velocity of the Janus particle is directed along either their major (prolate) or…

Biological Physics · Physics 2015-06-22 Pulak Kumar Ghosh

We investigate the transport diffusivity of artificial microswimmers, a.k.a. Janus particles, moving in a sinusoidal channel in the absence of external biases. Their diffusion constant turns out to be quite sensitive to the self-propulsion…

Soft Condensed Matter · Physics 2015-01-19 Xue Ao , Pulak Kumar Ghosh , Yunyun Li , Gerhard Schmid , Peter Hänggi , Fabio Marchesoni

We review recent advances in rectification control of artificial microswimmers, also known as Janus particles, diffusing along narrow, periodically corrugated channels. The swimmer self-propulsion mechanism is modeled so as to incorporate a…

Soft Condensed Matter · Physics 2014-12-19 Xue Ao , Pulak Kumar Ghosh , Yunyun Li , Gerhard Schmid , Peter Hänggi , Fabio Marchesoni

We numerically examine the driven transport of an overdamped self-propelled particle through a two-dimensional array of circular obstacles. A detailed analysis of transport quantifiers (mobility and diffusivity) has been performed for two…

Soft Condensed Matter · Physics 2023-10-16 Shubhadip Nayak , Sohom Das , Poulami Bag , Tanwi Debnath , Pulak K. Ghosh

Micron-sized particles moving through solution in response to self-generated chemical gradients serve as model systems for studying active matter. Their far-reaching potential applications will require the particles to sense and respond to…

Soft Condensed Matter · Physics 2016-03-09 W. E. Uspal , M. N. Popescu , S. Dietrich , M. Tasinkevych

Electrokinetically-driven Janus colloids, e.g., with one metallic and one dielectric hemisphere, confined between parallel walls exhibit a boundary-accumulation mechanism enabled by an effective cross-channel diffusivity which is distinct…

Soft Condensed Matter · Physics 2026-05-14 Sandeep Ramteke , Alicia Boymelgreen , Jarrod Schiffbauer

Directed transport of self-propelled ellipsoidal particles confined in a smooth corrugated channel with asymmetric potential and Gaussian colored noise is investigated. Effects of the channel, potential and colored noise on the system are…

Adaptation and Self-Organizing Systems · Physics 2023-08-23 Bing Wang , Wenfei Wu

The transport phenomenon of active particles confined in 3D(three dimensional) corrugated confined channel with Gaussian noises is investigated. Large noise intensity perpendicular to the symmetry axis is good for the diffusion and current…

Soft Condensed Matter · Physics 2022-09-01 Bing Wang

The transport of self-propelled particle confined in corrugated channel with L\'{e}vy noise is investigated. The parameters of L\'{e}vy noise(i.e., the stability index, the asymmetry parameter, the scale parameter, the location parameter)…

Statistical Mechanics · Physics 2021-08-12 Bing Wang , Zhongwei , Qu Xuechao Li

In this work, we use Molecular Dynamics and Lattice-Boltzmann simulations to study the properties of charged Janus particles in an electric field. We show that for relatively small net charge and thick electrostatic diffuse layer mobilities…

Soft Condensed Matter · Physics 2017-09-12 Taras Y. Molotilin , Vladimir Lobaskin , Olga I. Vinogradova

The transport phenomenon(directional movement) of self-propelled Brownian particles moving in a smooth corrugated confined channel is investigated. It is found that large $x$ direction noise intensity should reduce particles directional…

Soft Condensed Matter · Physics 2019-10-23 Bing Wang , Hao Chen , Yong Wu

For natural microswimmers, the interplay of swimming activity and external flow can promote robust motion, e.g. propulsion against ("upstream rheotaxis") or perpendicular to the direction of flow. These effects are generally attributed to…

Soft Condensed Matter · Physics 2018-01-30 Jaideep Katuri , William E. Uspal , Juliane Simmchen , Albert Miguel-López , Samuel Sánchez

We numerically investigated the Brownian motion of active Janus particles in a linear array of planar counter-rotating convection rolls at high P\'eclet numbers. Similarly to passive particles, active microswimmers exhibit advection…

Statistical Mechanics · Physics 2025-08-14 Pulak Kumar Ghosh , Fabio Marchesoni , Yunyun Li , Franco Nori

We theoretically consider the dynamics of a self-propelled active Janus motor moving in an external electric field. The external field can manipulate the route of a Janus particle and enforce it to move towards the desired targets. To…

Soft Condensed Matter · Physics 2021-11-17 Parvin Bayati , Ali Najafi

Self-propelled Janus particles exhibit autonomous motion thanks to engines of their own. However, due to randomly changing direction of such motion they are of little use for emerging nano-technological and bio-medical applications. Here,…

Soft Condensed Matter · Physics 2023-03-28 Poulami Bag , Shubhadip Nayak , Tanwi Debnath , Pulak K. Ghosh

The self-propulsion mechanism of active colloidal particles often generates not only translational but also rotational motion. For particles with an anisotropic mass density under gravity, the motion is usually influenced by a downwards…

Soft Condensed Matter · Physics 2017-09-12 Andrew I. Campbell , Raphael Wittkowski , Borge ten Hagen , Hartmut Löwen , Stephen J. Ebbens

Gold-capped Janus particles immersed in a near-critical binary mixture can be propelled using illumination. We employ a non-isothermal diffuse interface approach to investigate the self-propulsion mechanism of a single colloid. We attribute…

Soft Condensed Matter · Physics 2015-11-04 Sela Samin , René van Roij

Brownian transport of self-propelled overdamped microswimmers (like Janus particles) in a two-dimensional periodically compartmentalized channel is numerically investigated for different compartment geometries, boundary collisional…

Biological Physics · Physics 2013-07-02 Pulak Kumar Ghosh , Vyacheslav R. Misko , Fabio Marchesoni , Franco Nori

Using large scale molecular dynamics simulations we study the orientational dynamics of a heated Janus particle which exhibits self-propulsion. The asymmetry in the microscopic interaction of the colloid with the solvent is implemented by…

Soft Condensed Matter · Physics 2018-11-14 Dipanjan Chakraborty

The diffusion of a Janus rod-shaped nanoparticle in a dense Lennard-Jones fluid is studied using molecular dynamics (MD) simulations. The Janus particle is modeled as a rigid cylinder whose atoms on each half-side have different interaction…

Soft Condensed Matter · Physics 2017-07-31 Ali Kharazmi , Nikolai V. Priezjev
‹ Prev 1 2 3 10 Next ›