4.7 Article

Non-Gaussian fluctuations of a probe coupled to a Gaussian field

Related references

Note: Only part of the references are listed.
Article Physics, Multidisciplinary

Memory-induced oscillations of a driven particle in a dissipative correlated medium

Davide Venturelli et al.

Summary: The dynamics of a particle in a medium is affected by its interaction with the medium, especially in a non-equilibrium state. In this study, we investigated the case where the medium is modeled by a Gaussian field with relaxational dynamics and the particle is dragged through the medium by a moving harmonic trap. We found that when the particle is displaced from its average position in the non-equilibrium steady state, it exhibits damped oscillations, which can be confirmed through numerical simulations.

NEW JOURNAL OF PHYSICS (2023)

Article Physics, Multidisciplinary

Barrier Crossing in a Viscoelastic Bath

Felix Ginot et al.

Summary: In this study, we investigated the hopping dynamics of a colloidal particle across a potential barrier within a viscoelastic bath. We observed two distinct timescales in the waiting time distributions, with the longer one depending exponentially on the barrier height and the shorter one similar to the relaxation time of the fluid. The short timescale indicates the storage and release of elastic energy in the bath, resulting in a significant increase in the hopping rate.

PHYSICAL REVIEW LETTERS (2022)

Article Mechanics

Tracer particle in a confined correlated medium: an adiabatic elimination method

Davide Venturelli et al.

Summary: We present a simple and systematic method to determine the effective dynamics of a Brownian particle coupled to a rapidly fluctuating correlated medium under spatial confinement. The method allows us to address the case where the fluctuations of the medium are suppressed near the particle and analyze the corrections to the stationary distribution of the particle position and the diffusion coefficient.

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT (2022)

Article Physics, Multidisciplinary

Recoil experiments determine the eigenmodes of viscoelastic fluids

Felix Ginot et al.

Summary: The research investigates the transient recoil dynamics of a colloidal probe particle in a viscoelastic fluid, displaying two distinct timescales that agree with a microscopic model. The model reveals two sets of eigenmodes which correspond to reciprocal and non-reciprocal force conditions, confirming in experiments. The findings are expected to be relevant in conditions where particles are exposed to non-steady shear forces.

NEW JOURNAL OF PHYSICS (2022)

Article Physics, Fluids & Plasmas

Inducing oscillations of trapped particles in a near-critical Gaussian field

Davide Venturelli et al.

Summary: We investigate the nonequilibrium dynamics of two particles coupled to a thermally fluctuating scalar field and confined in separate harmonic potentials. When one of these particles is subjected to an external periodic driving, their motion synchronizes due to the field-mediated effective interaction, leading to a nonequilibrium periodic state. We analyze the nonlinear response of the second particle as a function of the driving frequency, particularly far from the adiabatic regime, and compare the perturbative, analytic solution to its adiabatic approximation, validating our predictions through numerical simulations.

PHYSICAL REVIEW E (2022)

Article Physics, Fluids & Plasmas

Nonequilibrium relaxation of a trapped particle in a near-critical Gaussian field

Davide Venturelli et al.

Summary: We investigated the nonequilibrium relaxational dynamics of a probe particle linearly coupled to a thermally fluctuating scalar field and subject to a harmonic potential. Our study provides insights into the behavior of optically trapped colloids immersed in fluid close to its bulk critical point. Both analytical and numerical approaches were used to explore the system, confirming the theoretical predictions and determining the universal exponents.

PHYSICAL REVIEW E (2022)

Article Mechanics

Micro-rheology of a particle in a nonlinear bath: Stochastic Prandtl-Tomlinson model

Rohit Jain et al.

Summary: Theoretical study on the motion of two particles coupled via a sinusoidal potential in nonlinear fluids reveals that predicted position oscillations agree with experimentally observed trends. The model also exhibits a rupture transition and resonance behavior under certain conditions, indicating complex dynamics in viscoelastic systems.

PHYSICS OF FLUIDS (2021)

Article Chemistry, Physical

Two step micro-rheological behavior in a viscoelastic fluid

Rohit Jain et al.

Summary: Micro-rheological experiments with a colloidal bead driven through a viscoelastic fluid reveal two distinct shear thinning regimes, with the second process exhibiting unique characteristics at small Weissenberg numbers. A simple model is able to capture the observed behavior and suggest the presence of two different length scales in the fluid. The analysis also indicates the existence of a mysterious length scale of a few micrometers.

JOURNAL OF CHEMICAL PHYSICS (2021)

Article Physics, Multidisciplinary

Properties of a nonlinear bath: experiments, theory, and a stochastic Prandtl-Tomlinson model

Boris Mueller et al.

NEW JOURNAL OF PHYSICS (2020)

Article Mechanics

Driven probe under harmonic confinement in a colloidal bath

Vincent Demery et al.

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT (2019)

Article Physics, Multidisciplinary

Statistics of Colloidal Suspensions Stirred by Microswimmers

Levke Ortlieb et al.

PHYSICAL REVIEW LETTERS (2019)

Article Mechanics

Brownian motion and beyond: first-passage, power spectrum, non-Gaussianity, and anomalous diffusion

Ralf Metzler

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT (2019)

Article Physics, Multidisciplinary

Transient dynamics of a colloidal particle driven through a viscoelastic fluid

Juan Ruben Gomez-Solano et al.

NEW JOURNAL OF PHYSICS (2015)

Article Physics, Multidisciplinary

Probing linear and nonlinear microrheology of viscoelastic fluids

J. R. Gomez-Solano et al.

Article Physics, Multidisciplinary

Generalized Langevin equations for a driven tracer in dense soft colloids: construction and applications

Vincent Demery et al.

NEW JOURNAL OF PHYSICS (2014)

Article Multidisciplinary Sciences

Shape matters in protein mobility within membranes

Francois Quemeneur et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2014)

Article Physics, Multidisciplinary

Drag Coefficient of a Rigid Spherical Particle in a Near-Critical Binary Fluid Mixture

Ryuichi Okamoto et al.

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN (2013)

Article Chemistry, Physical

Small-world rheology: an introduction to probe-based active microrheology

Laurence G. Wilson et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2011)

Article Physics, Fluids & Plasmas

Perturbative path-integral study of active- and passive-tracer diffusion in fluctuating fields

Vincent Demery et al.

PHYSICAL REVIEW E (2011)

Article Chemistry, Physical

Drag forces on inclusions in classical fields with dissipative dynamics

V. Demery et al.

EUROPEAN PHYSICAL JOURNAL E (2010)

Article Physics, Multidisciplinary

Drag Forces in Classical Fields

Vincent Demery et al.

PHYSICAL REVIEW LETTERS (2010)

Article Biophysics

Particle-Tracking Microrheology of Living Cells: Principles and Applications

Denis Wirtz

Annual Review of Biophysics (2009)

Article Multidisciplinary Sciences

Anomalous yet Brownian

Bo Wang et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2009)

Article Multidisciplinary Sciences

Nonequilibrium mechanics of active cytoskeletal networks

Daisuke Mizuno et al.

SCIENCE (2007)

Article Multidisciplinary Sciences

Lateral mobility of proteins in liquid membranes revisited

Y Gambin et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2006)

Article Mechanics

Laser tweezer microrheology of a colloidal suspension

A Meyer et al.

JOURNAL OF RHEOLOGY (2006)

Article Physics, Multidisciplinary

Electrophoretic microrheology in a dilute lamellar phase of a nonionic surfactant

D Mizuno et al.

PHYSICAL REVIEW LETTERS (2001)