Porous and microchannel flow studies with improved spatial and velocity resolution
E.S. Ulrich, S. Manne
University of Arizona, US
microfluidics, porous, force, knudsen, poiseuille
Current studies of micro and nanoflows suffer from limited spatial and velocity resolution due to the diffraction limit for optical techniques and probe size for other anemometry sensors. We describe a force transduction technique that may aid in the direct observation of fluid flows with sub-micron resolution. Of particular interest are flows in the Knudsen regime, where no-slip boundary conditions no longer apply. We investigate modification of poiseuille flow in small channels in a variety of porous structures and discuss our results.
Nanotech 2008 Conference Program Abstract