Rotational and translational drags of a Janus particle close to a wall and a lipid membrane - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Colloid and Interface Science Année : 2023

Rotational and translational drags of a Janus particle close to a wall and a lipid membrane

Florent Fessler
Fabrice Thalmann
Antonio Stocco

Résumé

Hypothesis: Measuring rotational and translational Brownian motion of single spherical particles reveals dissipations due to the interaction between the particle and the environment. Experiments: In this article, we show experiments where the in-plane translational and two rotational drag coefficients of a single spherical Brownian particle can be measured. These particle drags are functions of the particle size and the particle-wall distance, and of the viscous dissipations at play. We measure drag coefficients for Janus particles close to a solid wall and close to a lipid bilayer membrane. Findings: For a particle close to wall, we show that according to hydrodynamic models, particlewall distance and particle size can be determined. For a particle partially wrapped by lipid membranes, in absence of strong binding interactions, translational and rotational drags are significantly larger than the ones of non-wrapped particles. Beside the effect of the membrane viscosity, we show that dissipations in the deformed membrane cap region strongly contribute to the drag coefficients.
Fichier principal
Vignette du fichier
SharmaStoccoJCIS2023revNOHL3.pdf (1.12 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04212110 , version 1 (20-09-2023)

Identifiants

Citer

Vaibhav Sharma, Florent Fessler, Fabrice Thalmann, Carlos Marques, Antonio Stocco. Rotational and translational drags of a Janus particle close to a wall and a lipid membrane. Journal of Colloid and Interface Science, 2023, 652, pp.2159-2166. ⟨10.1016/j.jcis.2023.09.026⟩. ⟨hal-04212110⟩
17 Consultations
11 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More