Stroock, Abraham D. and Ismagilov, Rustem F. and Stone, Howard A. and Whitesides, George M. (2003) Fluidic Ratchet Based on Marangoni−Bénard Convection. Langmuir, 19 (10). pp. 4358-4362. ISSN 0743-7463. doi:10.1021/la026400c. https://resolver.caltech.edu/CaltechAUTHORS:20130821-160732896
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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.
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| 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. | |||||||||
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| Subject Keywords: | instability; equilibrium; competition | |||||||||
| Issue or Number: | 10 | |||||||||
| DOI: | 10.1021/la026400c | |||||||||
| Record Number: | CaltechAUTHORS:20130821-160732896 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130821-160732896 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 40875 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Whitney Barlow | |||||||||
| Deposited On: | 28 Aug 2013 21:38 | |||||||||
| Last Modified: | 10 Nov 2021 04:23 |
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