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Träfflista för sökning "WFRF:(Ohlin Mathias) ;pers:(Tenje M)"

Sökning: WFRF:(Ohlin Mathias) > Tenje M

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1.
  • Ohlin, Mathias, et al. (författare)
  • Improved positioning and detectability of microparticles in droplet microfluidics using two-dimensional acoustophoresis
  • 2017
  • Ingår i: Journal of Micromechanics and Microengineering. - : IOP Publishing. - 0960-1317 .- 1361-6439. ; 27:8
  • Tidskriftsartikel (refereegranskat)abstract
    • We have fabricated a silicon-glass two-phase droplet microfluidic system capable of generating sub 100 μm-sized, ø = (74 ± 2) μm, spherical droplets at rates of up to hundreds of hertz. By implementing a two-dimensional (2D) acoustophoresis particle-positioning method, we show a fourfold improvement in both vertical and lateral particle positioning inside the droplets compared to unactuated operation. The efficiency of the system has been optimized by incorporating aluminum matching layers in the transducer design permitting biocompatible operational temperatures (<37 °C). Furthermore, by using acoustic actuation, (99.8 ± 0.4)% of all encapsulated microparticles can be detected compared to only (79.0 ± 5.1)% for unactuated operation. In our experiments we observed a strong ordering of the microparticles in distinct patterns within the droplet when using 2D acoustophoresis; to explain the origin of these patterns we simulated numerically the fluid flow inside the droplets and compared with the experimental findings.
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2.
  • Ohlin, Mathias, 1984-, et al. (författare)
  • Two-dimensional acoustic focusing of microparticles in two-phase droplet-based microfluidic systems increases particle detectability
  • 2016
  • Ingår i: 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. - 9780979806490 ; , s. 713-714
  • Konferensbidrag (refereegranskat)abstract
    • We have fabricated a silicon-glass two-phase droplet-based microfluidic system and implemented two-dimensional acoustic focusing prior to droplet generation as well as continuously throughout the whole system to increase particle detectability. Using acoustic focusing we have effectively minimized sedimentation of the encapsulated particles and thereby increased particle detectability by as much as 44% compared to unactuated operation of the system.
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  • Resultat 1-2 av 2
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konferensbidrag (1)
tidskriftsartikel (1)
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refereegranskat (2)
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Fornell, A. (2)
Tenje, M. (2)
Bruus, H (1)
Ohlin, Mathias (1)
Ohlin, Mathias, 1984 ... (1)
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Uppsala universitet (2)
Lunds universitet (2)
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Engelska (2)
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