Abstract
We highlight the fact that hydrodynamic dispersion in narrow microchannels is essentially controlled by the width of the cross-section rather than by the much thinner height of the channel. Using the lubrication approximation, we provide simple formulas that allow quantitative evaluation of dispersion for any narrow cross-sectional shape, both in the short-time "ballistic regime" and in the long-time regime, which is effectively diffusive. The special cases of parabolic and quasi-rectangular shapes are considered due to their frequent use in microsystems.
| Original language | English (US) |
|---|---|
| Title of host publication | 05AIChE |
| Subtitle of host publication | 2005 AIChE Annual Meeting and Fall Showcase, Conference Proceedings |
| Number of pages | 1 |
| State | Published - Dec 1 2005 |
| Event | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States Duration: Oct 30 2005 → Nov 4 2005 |
Other
| Other | 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase |
|---|---|
| Country/Territory | United States |
| City | Cincinnati, OH |
| Period | 10/30/05 → 11/4/05 |
All Science Journal Classification (ASJC) codes
- General Engineering