Journal article
Experimental characterisation of a novel viscoelastic rectifier design
Department of Micro- and Nanotechnology, Technical University of Denmark1
Theoretical Microsystems Optimization, Department of Micro- and Nanotechnology, Technical University of Denmark2
Department of Chemical and Biochemical Engineering, Technical University of Denmark3
The Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark4
A planar microfluidic system with contractions and obstacles is characterized in terms of anisotropic flow resistance due to viscoelastic effects. The working mechanism is illustrated using streak photography, while the diodicity performance is quantified by pressure drop measurements. The point of maximum performance is found to occur at relatively low elasticity levels, with diodicity around 3.5.
Based on a previously published numerical work [Ejlebjerg et al., Appl. Phys. Lett. 100, 234102 (2012)], 2D simulations of the FENE-CR differential constitutive model are also presented, but limited reproducibility and uncertainties of the experimental data prevent a direct comparison at low elasticity, where the flow is essentially two-dimensional. © 2012 American Institute of Physics.
| Language: | English |
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| Publisher: | American Institute of Physics |
| Year: | 2012 |
| Pages: | 44112 |
| ISSN: | 19321058 |
| Types: | Journal article |
| DOI: | 10.1063/1.4769781 |
| ORCIDs: | Jensen, Kristian Ejlebjærg and Szabo, Peter |
