To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid
Fluid Dynamics
2015-05-14 v1
Abstract
We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of m. Above a threshold in impact speed, liquid emerges to the other side, forming micro-droplets of size about that of the grid holes. We propose a method to produce either a mono-disperse spray or a single tiny droplet of volume as small as a few picoliters corresponding to a volume division of the liquid drop by a factor of up to 10. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarity.
Keywords
Cite
@article{arxiv.0912.0035,
title = {To grate a liquid into tiny droplets by its impact on a hydrophobic micro-grid},
author = {P. Brunet and F. Lapierre and F. Zoueshtiagh and V. Thomy and A. Merlen},
journal= {arXiv preprint arXiv:0912.0035},
year = {2015}
}
Comments
3 pages, 5 figures, Accepted for publication in Applied Physics Letters