Published May 13, 2003
| public
Journal Article
Fluidic Ratchet Based on Marangoni−Bénard Convection
Chicago
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Abstract
A mean flow is observed experimentally in a layer of fluid undergoing Marangoni-Benard convection over a heated substrate that presents a pattern of asymmetrical grooves. The direction of the mean flow is a function of the temperature difference across the layer and of the thickness of the layer; the direction can be controlled by changing these parameters. This system acts as a fluidic ratchet: the local structure of the thermally driven convection interacts with the asymmetry of the local topographical pattern and causes a net, global flow in the fluid. This fluidic ratchet may be useful in handling fluids on macroscopic and microscopic scales.
Additional Information
Copyright © 2003 American Chemical Society. Published In Issue: May 13, 2003. Received August 12, 2002. Revised February 24, 2003. The work in the laboratory of G.M.W. was supported by the Department of Energy (DE-FG02-OOER45852). The work of both G.M.W. and H.A.S. was supported by NSF MRSEC DMR-9809363 and DARPA.Additional details
- Eprint ID
- 40875
- Resolver ID
- CaltechAUTHORS:20130821-160732896
- Department of Energy (DOE)
- DE-FG02-OOER45852
- NSF
- DMR-9809363
- DARPA
- Created
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2013-08-28Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field