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Dielectrophoretic manipulation and separation of particles in an S-shaped microchannel with hurdles

Conference Paper


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Abstract


  • This paper presents a novel dielectrophoresis

    (DEP)-based microfluidic device, which incorporates multiple

    round hurdles within an S-shaped curved microchannel for

    continuous manipulation and separation of microparticles.

    Local nonuniform electric fields are induced by means of both

    constricted gaps formed between hurdles and outer channel

    wall, and variable current lengths in curved sections with equal

    width. Under the effect of negative DEP, particles will be

    directed away from either inner wall or hurdle edge, as they

    transport throughout the microchannel electrokinetically. Both

    experiment and numerical simulation were conducted, the

    results of which showed that fix-sized (i.e. 10 or 15 Pm)

    polystyrene (PS) particles could be successfully switched,

    directed and focused by adjusting applied voltages at inlet and

    outlets, and size-based separation of 10 and 15 Pm particles was

    achieved with a careful selection of applied voltages. Compared

    to other microchannel designs that make use of either obstacle

    or curvature individually for inhomogeneous electric fields, this

    design offers advantages such as improved controllability over

    particle motion, lower requirement of applied voltage, reduced

    fouling and particle adhesion, etc.

UOW Authors


  •   Li, Ming (external author)
  •   Li, Shunbo (external author)
  •   Li, Weihua
  •   Wen, Weijia (external author)
  •   Alici, Gursel

Publication Date


  • 2013

Citation


  • Li, M., Li, S., Li, W., Wen, W. & Alici, G. (2013). Dielectrophoretic manipulation and separation of particles in an S-shaped microchannel with hurdles. 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) (pp. 362-366). United States: IEEE.

Scopus Eid


  • 2-s2.0-84883701044

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2256&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1247

Start Page


  • 362

End Page


  • 366

Place Of Publication


  • United States

Abstract


  • This paper presents a novel dielectrophoresis

    (DEP)-based microfluidic device, which incorporates multiple

    round hurdles within an S-shaped curved microchannel for

    continuous manipulation and separation of microparticles.

    Local nonuniform electric fields are induced by means of both

    constricted gaps formed between hurdles and outer channel

    wall, and variable current lengths in curved sections with equal

    width. Under the effect of negative DEP, particles will be

    directed away from either inner wall or hurdle edge, as they

    transport throughout the microchannel electrokinetically. Both

    experiment and numerical simulation were conducted, the

    results of which showed that fix-sized (i.e. 10 or 15 Pm)

    polystyrene (PS) particles could be successfully switched,

    directed and focused by adjusting applied voltages at inlet and

    outlets, and size-based separation of 10 and 15 Pm particles was

    achieved with a careful selection of applied voltages. Compared

    to other microchannel designs that make use of either obstacle

    or curvature individually for inhomogeneous electric fields, this

    design offers advantages such as improved controllability over

    particle motion, lower requirement of applied voltage, reduced

    fouling and particle adhesion, etc.

UOW Authors


  •   Li, Ming (external author)
  •   Li, Shunbo (external author)
  •   Li, Weihua
  •   Wen, Weijia (external author)
  •   Alici, Gursel

Publication Date


  • 2013

Citation


  • Li, M., Li, S., Li, W., Wen, W. & Alici, G. (2013). Dielectrophoretic manipulation and separation of particles in an S-shaped microchannel with hurdles. 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) (pp. 362-366). United States: IEEE.

Scopus Eid


  • 2-s2.0-84883701044

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2256&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1247

Start Page


  • 362

End Page


  • 366

Place Of Publication


  • United States