Optical microrheology using rotating laser-trapped particles
Optics
2007-05-23 v2
Abstract
We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity and surface effects within liquid media to be measured quantitatively on a micron-size scale using a trapped rotating spherical probe particle. We use the system to measure the viscosity inside a prototype cellular structure.
Cite
@article{arxiv.physics/0402021,
title = {Optical microrheology using rotating laser-trapped particles},
author = {Alexis I. Bishop and Timo A. Nieminen and Norman R. Heckenberg and Halina Rubinsztein-Dunlop},
journal= {arXiv preprint arXiv:physics/0402021},
year = {2007}
}
Comments
5 pages, 4 figures. v2: bibliographic details, minor text corrections