Kawale, D. (author), Bouwman, G.W. (author), Sachdev, S. (author), Zitha, P.L.J. (author), Kreutzer, M.T. (author), Rossen, W.R. (author), Boukany, P. (author) Molecular conformations of individual polymers during flow through porous media are directly observed by single-DNA imaging in microfluidics. As the Weissenberg number increases during flow (Wi > 1), we observe two types of elastic instabilities: (a) stationary dead-zone and (b) time-dependant dead-zone washing. When stretched polymer chains...
journal article 2017