Dielectric dispersion in biological cells of complex geometry simulated by the three-dimensional finite difference method

被引:99
作者
Asami, K [1 ]
机构
[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan
关键词
D O I
10.1088/0022-3727/39/3/012
中图分类号
O59 [应用物理学];
学科分类号
摘要
This paper describes numerical simulations of dielectric dispersion in biological cells of complex geometry to which analytical approaches are not applicable. A numerical technique based on the three-dimensional finite difference method (3D-FDM) has been developed to calculate the equivalent complex permittivity of a system including a single cell or periodically arranged cells in a continuous medium. It has been tested with a spherical cell model, whose equivalent complex permittivity is calculated from analytical formulae. The agreement between the dielectric spectra calculated by 3D-FDM and from the analytical formulae was quite satisfactory with volume fractions of cells up to 0.5. Furthermore, dielectric spectra were simulated for cells in cell division, i.e. a spherical cell divides into two spherical cells via a doublet-shaped cell with a narrow cytoplasmic junction.
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页码:492 / 499
页数:8
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