介电谱用于探测细胞悬液的相变过程  

PHASE CHANGE PROCESS OF CELL SUSPENSION DETECTED BY MEASURING ITS DIELECTRIC SPECTRUM

作　　者：李应保[1] 徐传骧[1] 刘耀南[1] 

机构地区：[1]西安交通大学电气工程系,西安710049

出　　处：《制冷学报》1992年第1期22-26,共5页Journal of Refrigeration

基　　金：国家自然科学基金博士点基金

摘　　要：本文首次对正常人红细胞悬液在低温下的介电特性进行了系统的测定。结果表明:在一定频率下介电系数随温度的变化可以反映细胞悬液的相变过程;在一定温度下介电系数随频率的变化可以反映细胞悬液在低温下的微观结构。用作者提的介电极化模型,成功地解释了红细胞悬液介电系数的变化规律。In this paper the dielectric spectrum are firstly obtained for the suspension of human red blood cells.The expermental results indicate that at certain frequency.the change of dieletric permittivity with temperature can reflect the phase change processes of the samples,while at certain temperature, the way that the dielectric permittivity changes with frequency can reflect sample's structure.The experimental results are successfully explained with the dielectric polarized model that we have presented before.

关 键 词：介电系数 介电谱 细胞悬液 介电极化 低温保存 损耗角正切 介电特性 微观结构 兼性离子 体积分 

分 类 号：TB6-55[一般工业技术—制冷工程]