3D rotational diffusion microrheology using 2D video microscopy - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue EPL - Europhysics Letters Année : 2012

3D rotational diffusion microrheology using 2D video microscopy

Loudjy Chevry
  • Fonction : Auteur
Bérengère Abou

Résumé

We propose a simple way to perform three-dimensional (3D) rotational microrheology using two-dimensional (2D) video microscopy. The 3D rotational brownian motion of micrometric wires in a viscous fluid is deduced from their projection on the focal plane of an optical microscope objective. The rotational diffusion coefficient of the wires of length between 1-100 \mu m is extracted, as well as their diameter distribution in good agreement with electron microscopy measurements. This is a promising way to characterize soft visco-elastic materials, and probe the dimensions of anisotropic objects.

Dates et versions

hal-00878266 , version 1 (29-10-2013)

Identifiants

Citer

Rémy Colin, Minhao Yan, Loudjy Chevry, Jean-François Berret, Bérengère Abou. 3D rotational diffusion microrheology using 2D video microscopy. EPL - Europhysics Letters, 2012, ⟨10.1209/0295-5075/97/30008⟩. ⟨hal-00878266⟩
62 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More