Motion of a sphere in an oscillatory boundary layer: an optical tweezer based study
Soft Condensed Matter
2007-05-23 v1 Other Condensed Matter
Abstract
The drag forces acting on a single polystyrene sphere in the vicinity of an oscillating glass plate have been measured using an optical tweezer. The phase of the sphere is found to be a sensitive probe of the dynamics of the sphere. The evolution of the phase from an inertially-coupled regime to a purely velocity-coupled regime is explored. Moreover, the frequency dependent response is found to be characteristic of a damped oscillator with an effective inertia which is several orders of magnitude greater than that of the particle.
Keywords
Cite
@article{arxiv.cond-mat/0608281,
title = {Motion of a sphere in an oscillatory boundary layer: an optical tweezer based study},
author = {Prerna Sharma and Shankar Ghosh and S. Bhattacharya},
journal= {arXiv preprint arXiv:cond-mat/0608281},
year = {2007}
}
Comments
12 pages, 4 figures, latex