Abstract
We report on cavitation in confined microscopic environments which are commonly called microfluidic or lab-on-a-chip systems. The cavitation bubble is created by focusing a pulsed laser into these structures filled with a lght-absorbing liquid. At hte center of a 20 mu m thick and 1 mm wide channel, pancake-shaped bubbles expand an collapse radially. The bubble dynamics compare with a two-dimensional Rayleight model and a planar flow field during the bubble collapse is measured. When the bubble is created close to a wall a liquid jet is focused towards the wall, resembling the jetting phenomenon in axisysmmetry.
| Original language | English |
|---|---|
| Pages (from-to) | 254501-1-254501-4 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 98 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - 22 Jun 2007 |