Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Przeglądasz jako GOŚĆ
Tytuł pozycji:

Formation and manipulation of ferrofluid droplets with magnetic fields in a microdevice: a numerical parametric study.

Tytuł :
Formation and manipulation of ferrofluid droplets with magnetic fields in a microdevice: a numerical parametric study.
Autorzy :
Amiri Roodan V; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. .
Gómez-Pastora J; William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 315 Koffolt Laboratories, 151 West Woodruff Avenue, Columbus, Ohio 43210, USA.
Karampelas IH; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. .
González-Fernández C; Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, Spain.
Bringas E; Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, Spain.
Ortiz I; Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, Spain.
Chalmers JJ; William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 315 Koffolt Laboratories, 151 West Woodruff Avenue, Columbus, Ohio 43210, USA.
Furlani EP; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. and Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
Swihart MT; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA. .
Pokaż więcej
Źródło :
Soft matter [Soft Matter] 2020 Oct 28; Vol. 16 (41), pp. 9506-9518.
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Original Publication: Cambridge, England : Royal Society of Chemistry, 2005-
Entry Date(s) :
Date Created: 20200923 Latest Revision: 20201029
Update Code :
20210210
DOI :
10.1039/d0sm01426e
PMID :
32966533
Czasopismo naukowe
We present a numerical model that describes the microfluidic generation and manipulation of ferrofluid droplets under an external magnetic field. We developed a numerical Computational Fluid Dynamics (CFD) analysis for predicting and optimizing continuous flow generation and processing of ferrofluid droplets with and without the presence of a permanent magnet. More specifically, we explore the dynamics of oil-based ferrofluid droplets within an aqueous continuous phase under an external inhomogeneous magnetic field. The developed model determines the effect of the magnetic field on the droplet generation, which is carried out in a flow-focusing geometry, and its sorting in T-junction channels. Three-channel depths (25 μm, 30 μm, and 40 μm) were investigated to study droplet deformation under magnetic forces. Among the three, the 30 μm channel depth showed the most consistent droplet production for the studied range of flow rates. Ferrofluids with different loadings of magnetic nanoparticles were used to observe the behavior for different ratios of magnetic and hydrodynamic forces. Our results show that the effect of these factors on droplet size and generation rate can be tuned and optimized to produce consistent droplet generation and sorting. This approach involves fully coupled magnetic-fluid mechanics models and can predict critical details of the process including droplet size, shape, trajectory, dispensing rate, and the perturbation of the fluid co-flow for different flow rates. The model enables better understanding of the physical phenomena involved in continuous droplet processing and allows efficient parametric analysis and optimization.

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies