Experimental characterisation of a novel viscoelastic rectifier design

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Kristian Ejlebjerg Jensen (Author) Other; Peter Szabo (Author) Other; Fridolin Okkels (Author) Other; Alves, MA (Author) FEUP

Journal

Title: Biomicrofluidics

Vol. 6

Final page: 044112

ISSN: 1932-1058

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 16 Citations

Scientific classification

FOS: Engineering and technology > Nano-technology

CORDIS: Technological sciences > Engineering ; Technological sciences > Engineering > Microengineering

Other information

Authenticus ID: P-002-2NE

DOI: 10.1063/1.4769781

Abstract (EN): 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 , 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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769781]

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8