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Portrait of Jonas Tegenfeldt. Photo: Kennet Ruona

Jonas Tegenfeldt

Professor, Coordinator Nanobiology & Neuronanoscience

Portrait of Jonas Tegenfeldt. Photo: Kennet Ruona

Tipping the balance with dielectrophoretic forces - An electric deterministic lateral displacement device


  • Jason P. Beech
  • Peter Jönsson
  • Jonas O. Tegenfeldt

Summary, in English

We present experimental results and simulations on a simple method for tunable particle separation based on a combination of Deterministic Lateral Displacement (DLD) and Insulator Based Dielectrophoresis (I-DEP). Rather than deriving its tunability from its elastic properties[1], our present device uses an applied AC field to perturb the particle trajectories in the pressure-driven flow and is thereby capable of scanning the critical size over a range of factor two. Potential benefits include: extended dynamic range, facilitated fabrication and less clogging for given particle sizes, and combination of the precision afforded by DLD with the versatility of DEP.


  • Solid State Physics
  • Lund University

Publishing year






Document type

Conference paper


  • Deterministic lateral displacement
  • Dielectrophoresis
  • Fluidics
  • Fractionation

Conference name

12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2008

Conference date

2008-10-12 - 2008-10-16

Conference place

San Diego, CA, United States