3D rotational diffusion microrheology using 2D video microscopy
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 rotati...
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| Veröffentlicht in: | arXiv.org 2012-01 |
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| creator | Rémy Colin Yan, Minhao Chevry, Loudjy Berret, Jean-François Abou, Bérengère |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1105.6338 |
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| source | arXiv.org; Free E- Journals |
| subjects | Brownian motion Diffusion coefficient Elastic anisotropy Focal plane Microscopy Physics - Soft Condensed Matter Physics - Statistical Mechanics Three dimensional motion Viscoelasticity Viscous fluids |
| title | 3D rotational diffusion microrheology using 2D video microscopy |
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