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Design and simulation of an interdigital-chaotic advection micromixer for lab-on-a-chip applications
conference contribution
posted on 2008-01-01, 00:00 authored by Khashayar Khoshmanesh, Abbas KouzaniAbbas Kouzani, Saeid Nahavandi, Sara Baratchi, Jagat KanwarThis paper presents the design and simulation of a novel passive micromixer. The micromixer consists of two inlet tanks, one mixing channel and two outlet channels. In order to maximise the mixing efficiency, the following considerations are made: (i) The inlet tanks are followed by a series of microchannels, in which the flow is split. The microchannels are arranged in an interdigital manner to maximise the contact area between the two flows. (ii) The microchannels attached to the lower inlet tank have an upward slope while those attached to the upper tank have a downward slope. The higher-density flow is fed to the lower inlet tank and gets an upward velocity before entering the mixing channel. (iii) Two triangular barriers are placed within the mixing channel to impose chaotic advection and perturb the less-mixed flow along the top and bottom surfaces of the channel. (iv) Finally, two outlet channels are incorporated to discard the less-mixed flow. Three-dimensional simulations are carried out to evaluate the performance of the micromixer. Simulations are performed in the absence and presence of the gravitational force to analyse the influence of gravity on the micromixer. Mixing efficiencies of greater than 92% are achieved using water and a 1011'density biological solvent as the mixing fluids.
History
Event
European Conference on Microfluidics (1st : 2008 : Bologna, Italy)Pagination
1 - 9Publisher
Societe Hydrotechnique de France SHFLocation
Universita di Bologna, ItalyPlace of publication
Paris, FranceStart date
2008-12-10End date
2008-12-12ISBN-13
9782906831766ISBN-10
290683176XLanguage
engPublication classification
X Not reportable; E1.1 Full written paper - refereedCopyright notice
2008, Societe Hydrotechnique de France SHFEditor/Contributor(s)
S Colin, G Luca MoriniTitle of proceedings
MicroFlu 2008 : Proceedings of the 1st European Conference on MicrofluidicsUsage metrics
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