ArticleBiomicrofluidics2016
Size-dependent dielectrophoretic crossover frequency of spherical particles.
Article in Biomicrofluidics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- The Dielectrophoretic Interactions of Curved Particles in a DC Electric Field.Micromachines · 2025Article
- Dielectrophoretic profiling of erythrocytes to study the impacts of metabolic stress, temperature, and storage duration utilizing a point-and-planar microdevice.Scientific reports · 2023Article
- Electro-Microfluidic Assembly Platform for Manipulating Colloidal Structures inside Water-in-Oil Emulsion Droplets.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Dielectrophoresis: Developments and applications from 2010 to 2020.Electrophoresis · 2021Review
- Dielectrophoretic Characterization of Tenogenically Differentiating Mesenchymal Stem Cells.Biosensors · 2021Article
- An Electrokinetically-Driven Microchip for Rapid Entrapment and Detection of Nanovesicles.Micromachines · 2020Article
- Dielectrophoresis as a tool for electrophysiological characterization of stem cells.Biophysics reviews · 2020Review
- Dielectrophoretic Crossover Frequency of Single Particles: Quantifying the Effect of Surface Functional Groups and Electrohydrodynamic Flow Drag Force.Nanomaterials (Basel, Switzerland) · 2020Article
- Dielectrophoretic Microfluidic Device for Separating Microparticles Based on Size with Sub-Micron Resolution.Micromachines · 2020Article
- Nucleotide Identification in DNA Using Dielectrophoresis Spectroscopy.Micromachines · 2019Article
- Expanding the flexibility of dynamics simulation on different size particle-particle interactions by dielectrophoresis.Journal of biological physics · 2019Article
- Erythrocyte Membrane Failure by Electromechanical Stress.Applied sciences (Basel, Switzerland) · 2018Article
- Preface to Special Topic: Selected Papers from the 5th International Conference on Optofluidics.Biomicrofluidics · 2016Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dielectrophoresis (DEP) has been extensively used in lab-on-a-chip systems for trapping, separating, and manipulating of micro particles suspended in a liquid medium. The most widely used analytic model, the dipole model, provides an accurate prediction on the crossover frequency of submicron particles, but cannot explain the significant drop in crossover frequency of larger particles. Here, we present numerical simulations using the Maxwell stress tensor (MST) and finite element method to study the size effect of the DEP crossover frequency of spherical polystyrene particles suspended in de-ionized water. Our results show that the surface conductance due to the electrical double layer plays a key role, and the size dependency of crossover frequency obtained by the MST method agrees reasonably well with published experimental data. The exponents of the power law are approximately -1.0 and -4.3 for smaller (diameter < 4.6 μm) and larger particles (diameter > 4.6 μm), respectively. The free surface charge distribution reveals that the charge begins accumulating on the particle equator for particle diameters larger than a critical diameter of 4.6 μm, a result not captured by the dipolar approximation. This method may be extended to analyze bioparticles with complex shapes and composition, and provides new insights into the interpretation of dielectrophoresis applications using lab-on-a-chip systems.
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