Electric impedance of marine egg membranes.
Electric impedance of marine egg membranes.
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DOI：
10.1039/tf9373300966
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发表时间：
1937-01-01
影响因子：
--
通讯作者：
Cole, KS
中科院分区：
文献类型：
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作者：
Cole, KS
1827年欧姆定律公布后不久，人们就开始尝试测定生物材料的直流电阻。随着方法的出现，用交流电进行测量，首先是在低频，最近是在越来越高的频率。由Hober、L·菲利普森(2)和Fricke(3)领导的数据解释技术也取得了类似的进展，对活细胞结构的电学性质形成了相当大致的图景。细胞膜对直流电和低频交流电具有很高的电阻，但其厚度和介电常数如此之大，以至于它还充当单位面积上的大容量电容器。在中高频下的测量结果表明，电池内部是一种相对均匀的电解导体。为了将这些解释放在定量的基础上，有必要对细胞周围和通过细胞的电流有一个充分的分析表示。球形细胞悬浮液的理论相当简单，直接适用于海产卵。
Soon after the announcement of Ohm’s law in 1827, attempts were made to determine the direct current electrical resistance of biological materials. As methods became available, measurements were made with alternating current, first at low frequency and more recently at higher and higher frequencies. A similar development in the technique of interpretation of the data, led by Hober, l Philippson, 2 and Fricke, 3 has evolved a fairly general picture of the electrical properties of living cell structures.The cell membrane has a high resistance to direct current and low frequency alternating current, but the thickness and dielectric constant are such that it also acts as a condenser with a large capacity per unit area. From measurements at moderately high frequencies, where the current can flow through this membrane capacity, the cell interior is found to be a relatively homogeneous electrolytic conductor. To put these interpretations on a quantitative basis, it is necessary to have an adequate analytical representation of the current flow around and through the cells. The theory of suspensions of spherical cells is rather simple and is directly applicable to marine eggs.