Numerical modeling of motion trajectory and deformation behavior of a cell in a nonuniform electric field

Li, Hua; Ye, Ting; Lam, Kwok‐Yan

doi:10.1063/1.3574449

Cited by 2 publications

(1 citation statement)

References 29 publications

(29 reference statements)

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“…Techniques using electric fields for hybridization and the production of transgenic yeast strains have promoted the dielectric characterization of yeasts as an active and continuously expanding field of research [1,2] leading to practical and commercial applications. For the experimental characterization of individual cells, non-invasive AC electrokinetic techniques such as electrorotation (ER), dielectrophoresis (DEP) and electroorientation (EO) are used, whereas for biological cell suspensions the dielectric spectroscopy (DS) technique is generally applied [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Dielectric Characterization of the Yeast Cell Budding Cycle

Franco¹,

Otero²,

Madronero³

et al. 2013

PIER

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Abstract-We combine experimental electrorotation data and the numerical analysis of the electrorotation chamber and cell to electrically characterize the Saccharomyces cerevisiae yeast budding cell cycle and to obtain the electrical parameters of the cell. To model the yeast cell we use spherical and doublet-shaped geometries with a four layered structure: cytoplasm, membrane, inner and outer walls. To derive the geometrical and electrical parameters of the yeast model we use the finite element method to calculate the yeast rotational velocity spectrum and apply the least-square method to fit the calculated values to experimental data. We show that the calculated yeast electrorotation spectra undergo significant changes throughout its budding cycle and that the calculated spectra fit experimental data obtained for 0% (start) and 50% representative budding stages very well. The analysis also shows the small variation of the rotation crossover frequency within a full span of the yeast growth cycle. As an application of this work, we apply the Maxwell-Wagner formalism to obtain the dielectric spectra of truly synchronized yeast suspensions.

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Section: Introductionmentioning

confidence: 99%

Dielectric Characterization of the Yeast Cell Budding Cycle

Franco¹,

Otero²,

Madronero³

et al. 2013

PIER

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Time-dependent electrohydrodynamics of a compressible viscoelastic capsule in the small-deformation limit

Thaokar

2016

Phys. Rev. E

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A theoretical analysis of the time-dependent electrohydrodynamics of a viscoelastic compressible capsule, characterized by the two-dimensional Young's modulus and surface viscosity, is studied in the small-deformation limit. A systematic ac electrohydrodynamics analysis is conducted, and time-independent and time-periodic deformations are related to the electric capillary number and the membrane properties. Additionally, the relaxation of a capsule stretched by a dc electric field is also presented. This necessitates an accurate estimation of the initial strain field in the stretched capsule. Both an oscillatory analysis and an analysis of the relaxation of a stretched capsule are presented for a capsule containing an aqueous phase, modeled as a perfect conductor, and suspended in a perfect dielectric with an infinitesimally thin viscoelastic membrane separating the two. The membrane is assumed to be a perfect dielectric with no electrical contrast with the suspending fluid.

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Numerical modeling of motion trajectory and deformation behavior of a cell in a nonuniform electric field

Cited by 2 publications

References 29 publications

Dielectric Characterization of the Yeast Cell Budding Cycle

Dielectric Characterization of the Yeast Cell Budding Cycle

Time-dependent electrohydrodynamics of a compressible viscoelastic capsule in the small-deformation limit

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