Microfluidic analog of the four-roll mill

Hudson, S. D.; Phelan Jr., F. R.; Handler, M. D.; Cabral, J. T.; Migler, K. B.; Amis, E. J.
July 2004
Applied Physics Letters;7/12/2004, Vol. 85 Issue 2, p335
Academic Journal
We describe a microfluidic trap, for analysis of fluids and suspensions, that simulates the function of a four-roll mill, a rheological tool with adjustable flow type and rate. These flow characteristics were designed with the assistance of flow simulations and are measured here by micro-particle-image-velocimetry. This miniature device permits microscopic manipulations and measurements (e.g., of cells, particles, and drops) and it is capable of a range of flow types, including simple shear.


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