Sebastián J L, Muñoz San Martín S, Sancho M, Miranda J M
Dpt. Física Aplicada III, Facultad de Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Bioelectrochemistry. 2004 Aug;64(1):39-45. doi: 10.1016/j.bioelechem.2004.02.003.
This paper studies the internal electric field distribution in human erythrocytes exposed to MW radiation. For this purpose, an erythrocyte cell model is exposed to linearly polarized electromagnetic (EM) plane waves of frequency 900 MHz and the electric field within the cell is calculated by using a finite element (FE) technique with adaptive meshing. The results obtained show the dependence of the induced electric field distribution on the main modelling parameters, i.e., the electrical properties (permittivity and conductivity) of the membrane and cytoplasm and the orientation of the cell with respect to the applied field. It is found that for certain orientations, the field amplification within the membrane of the erythrocyte shape cell can be higher than the one observed in an equivalent simple spheroidal geometry cell, commonly used in bioelectromagnetism. The present work shows that a better insight of the interaction of electromagnetic fields with basic biological structures is obtained when the most possible realistic cell shape is used.
本文研究了暴露于微波辐射下的人体红细胞内部电场分布情况。为此，将红细胞细胞模型暴露于频率为900 MHz的线性极化电磁（EM）平面波中，并采用具有自适应网格划分的有限元（FE）技术计算细胞内的电场。所得结果表明，感应电场分布取决于主要建模参数，即细胞膜和细胞质的电学性质（介电常数和电导率）以及细胞相对于外加电场的取向。研究发现，对于某些取向，红细胞形状细胞的膜内场放大可能高于生物电磁学中常用的等效简单球形几何细胞中观察到的场放大。目前的工作表明，当使用最可能逼真的细胞形状时，可以更好地洞察电磁场与基本生物结构的相互作用。
