Articles producció científica> Enginyeria Mecànica

Experimental study of the deposition of magnetic particles on the walls of microchannels

  • Identification data

    Identifier: imarina:9220640
    Authors:
    Varela SRivas AVernet APallarès J
    Abstract:
    This study analyzes experimentally the deposition of magnetic beads on the walls of a square microchannel by the action of a nearby cubical magnet. The deposition has been studied for different magnetic bead sizes, flow rates, magnetic conditions and with solutions of magnetic and non‐magnetic particles. Images of the time evolution of the deposition under the different conditions have been analyzed to determine the spatial distribution of the accumulation and the growth rate of the depositions. It has been found that the way in which the magnetic beads are deposited on the walls of the microchannel depends strongly on their size and the magnetic configuration. The accumulation of the major part of particles is on the wall closest to the magnet and, depending on the size of the particles, near the magnet leading and trailing edges or near the center of the magnet. The experiments with magnetic and non‐magnetic particles revealed the screening effect of the non-magnetic particles on the deposition. In this case, the non‐magnetic particles displace the deposition toward the region near the center of the magnet and near the trailing edge.
  • Others:

    Author, as appears in the article.: Varela S; Rivas A; Vernet A; Pallarès J
    Department: Enginyeria Mecànica
    URV's Author/s: Pallarés Curto, Jorge María / Varela Ballesta, Sylvana Verónica / Vernet Peña, Antonio
    Keywords: Ultrafine particles Particle deposition Microchannel Magnetic beads thrombosis particle deposition microfluidics microchannel lab in-vivo
    Abstract: This study analyzes experimentally the deposition of magnetic beads on the walls of a square microchannel by the action of a nearby cubical magnet. The deposition has been studied for different magnetic bead sizes, flow rates, magnetic conditions and with solutions of magnetic and non‐magnetic particles. Images of the time evolution of the deposition under the different conditions have been analyzed to determine the spatial distribution of the accumulation and the growth rate of the depositions. It has been found that the way in which the magnetic beads are deposited on the walls of the microchannel depends strongly on their size and the magnetic configuration. The accumulation of the major part of particles is on the wall closest to the magnet and, depending on the size of the particles, near the magnet leading and trailing edges or near the center of the magnet. The experiments with magnetic and non‐magnetic particles revealed the screening effect of the non-magnetic particles on the deposition. In this case, the non‐magnetic particles displace the deposition toward the region near the center of the magnet and near the trailing edge.
    Thematic Areas: Química Physics, applied Nanoscience & nanotechnology Mechanical engineering Instruments & instrumentation Engenharias iv Electrical and electronic engineering Control and systems engineering Chemistry, analytical
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: sylvana.varela@urv.cat anton.vernet@urv.cat jordi.pallares@urv.cat
    Author identifier: 0000-0001-9750-1677 0000-0002-7028-1368 0000-0003-0305-2714
    Record's date: 2024-07-27
    Journal volume: 12
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/2072-666X/12/6/712
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Micromachines. 12 (6):
    APA: Varela S; Rivas A; Vernet A; Pallarès J (2021). Experimental study of the deposition of magnetic particles on the walls of microchannels. Micromachines, 12(6), -. DOI: 10.3390/mi12060712
    Article's DOI: 10.3390/mi12060712
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Publication Type: Journal Publications
  • Keywords:

    Chemistry, Analytical,Control and Systems Engineering,Electrical and Electronic Engineering,Instruments & Instrumentation,Mechanical Engineering,Nanoscience & Nanotechnology,Physics, Applied
    Ultrafine particles
    Particle deposition
    Microchannel
    Magnetic beads
    thrombosis
    particle deposition
    microfluidics
    microchannel
    lab
    in-vivo
    Química
    Physics, applied
    Nanoscience & nanotechnology
    Mechanical engineering
    Instruments & instrumentation
    Engenharias iv
    Electrical and electronic engineering
    Control and systems engineering
    Chemistry, analytical
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