Optimization of Grooved Micromixer for Microengineering Technologies

I. Sabotin, G. Tristo, Giuliano Bissacco, J. Valentincic

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Due to the absence of turbulent flow and the slow diffusion process, mixing of solutions at micro-scale is a difficult task. This paper describes the optimization route towards the efficient design of a bottom grooved micromixer. Based on thoroughly discussed mixing mechanisms, the optimization was performed using FEM numerical simulations and the starting geometry was a Staggered Herringbone Mixer (SHM) groove design. Optimization procedure consists of two sequences: (I) one SHM groove geometry is optimized based on the magnitude of transversal velocity at the end of the groove and (II) different configurations of six grooves are investigated taking into account capabilities and limitations of microengineering technologies (MET). Newly developed designs were benchmarked against the established SHM design and a better efficiency was achieved. Additionally, a good mixing efficiency was also achieved with a modified Slanted Groove Micromixer (SGM). A SGM prototype was machined by micro electrical discharge milling (EDM) technology. The simulation results were experimentally verified with flow visualization and a good agreement was observed. Due to simple 2.5D geometry and efficient mixing properties the proposed micromixer design is adequate to be used in the Lab-On- A-Chip (LOC) systems.
Original languageEnglish
JournalInformacije MIDEM
Volume43
Issue numberPART 1
Pages (from-to)3-13
ISSN0352-9045
Publication statusPublished - 2013

Keywords

  • Micromixer
  • Microstructures
  • Micromachining
  • Micro electrical discharge milling
  • Microfluidics
  • Design optimization
  • FEM simulations

Cite this

Sabotin, I., Tristo, G., Bissacco, G., & Valentincic, J. (2013). Optimization of Grooved Micromixer for Microengineering Technologies. Informacije MIDEM, 43(PART 1), 3-13.
Sabotin, I. ; Tristo, G. ; Bissacco, Giuliano ; Valentincic, J. / Optimization of Grooved Micromixer for Microengineering Technologies. In: Informacije MIDEM. 2013 ; Vol. 43, No. PART 1. pp. 3-13.
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abstract = "Due to the absence of turbulent flow and the slow diffusion process, mixing of solutions at micro-scale is a difficult task. This paper describes the optimization route towards the efficient design of a bottom grooved micromixer. Based on thoroughly discussed mixing mechanisms, the optimization was performed using FEM numerical simulations and the starting geometry was a Staggered Herringbone Mixer (SHM) groove design. Optimization procedure consists of two sequences: (I) one SHM groove geometry is optimized based on the magnitude of transversal velocity at the end of the groove and (II) different configurations of six grooves are investigated taking into account capabilities and limitations of microengineering technologies (MET). Newly developed designs were benchmarked against the established SHM design and a better efficiency was achieved. Additionally, a good mixing efficiency was also achieved with a modified Slanted Groove Micromixer (SGM). A SGM prototype was machined by micro electrical discharge milling (EDM) technology. The simulation results were experimentally verified with flow visualization and a good agreement was observed. Due to simple 2.5D geometry and efficient mixing properties the proposed micromixer design is adequate to be used in the Lab-On- A-Chip (LOC) systems.",
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Sabotin, I, Tristo, G, Bissacco, G & Valentincic, J 2013, 'Optimization of Grooved Micromixer for Microengineering Technologies', Informacije MIDEM, vol. 43, no. PART 1, pp. 3-13.

Optimization of Grooved Micromixer for Microengineering Technologies. / Sabotin, I.; Tristo, G.; Bissacco, Giuliano; Valentincic, J.

In: Informacije MIDEM, Vol. 43, No. PART 1, 2013, p. 3-13.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Optimization of Grooved Micromixer for Microengineering Technologies

AU - Sabotin, I.

AU - Tristo, G.

AU - Bissacco, Giuliano

AU - Valentincic, J.

PY - 2013

Y1 - 2013

N2 - Due to the absence of turbulent flow and the slow diffusion process, mixing of solutions at micro-scale is a difficult task. This paper describes the optimization route towards the efficient design of a bottom grooved micromixer. Based on thoroughly discussed mixing mechanisms, the optimization was performed using FEM numerical simulations and the starting geometry was a Staggered Herringbone Mixer (SHM) groove design. Optimization procedure consists of two sequences: (I) one SHM groove geometry is optimized based on the magnitude of transversal velocity at the end of the groove and (II) different configurations of six grooves are investigated taking into account capabilities and limitations of microengineering technologies (MET). Newly developed designs were benchmarked against the established SHM design and a better efficiency was achieved. Additionally, a good mixing efficiency was also achieved with a modified Slanted Groove Micromixer (SGM). A SGM prototype was machined by micro electrical discharge milling (EDM) technology. The simulation results were experimentally verified with flow visualization and a good agreement was observed. Due to simple 2.5D geometry and efficient mixing properties the proposed micromixer design is adequate to be used in the Lab-On- A-Chip (LOC) systems.

AB - Due to the absence of turbulent flow and the slow diffusion process, mixing of solutions at micro-scale is a difficult task. This paper describes the optimization route towards the efficient design of a bottom grooved micromixer. Based on thoroughly discussed mixing mechanisms, the optimization was performed using FEM numerical simulations and the starting geometry was a Staggered Herringbone Mixer (SHM) groove design. Optimization procedure consists of two sequences: (I) one SHM groove geometry is optimized based on the magnitude of transversal velocity at the end of the groove and (II) different configurations of six grooves are investigated taking into account capabilities and limitations of microengineering technologies (MET). Newly developed designs were benchmarked against the established SHM design and a better efficiency was achieved. Additionally, a good mixing efficiency was also achieved with a modified Slanted Groove Micromixer (SGM). A SGM prototype was machined by micro electrical discharge milling (EDM) technology. The simulation results were experimentally verified with flow visualization and a good agreement was observed. Due to simple 2.5D geometry and efficient mixing properties the proposed micromixer design is adequate to be used in the Lab-On- A-Chip (LOC) systems.

KW - Micromixer

KW - Microstructures

KW - Micromachining

KW - Micro electrical discharge milling

KW - Microfluidics

KW - Design optimization

KW - FEM simulations

M3 - Journal article

VL - 43

SP - 3

EP - 13

JO - Informacije MIDEM

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