Cui Xiangping, Ma Qing, Ding Fang
Institute of Physiology & Pharmacology, Ningbo University Medical School, Ningbo 315211, China.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2007 Jun;24(3):682-4.
The dielectric spectroscopy of human platelets was measured within the frequency range of 100 KHz-100 MHz, and the dielectric numerical characters of human platelets in response to AC electric field were analyzed. We measured the AC impedance of normal human platelets with the impedance technique in the frequency domain for the first time. The experimental data were used to draw a relationship curve between the frequency of electric field and permittivity or conductivity, and then the dielectric spectrum and the Cole-Cole plots of human platelets were established and then, the characteristics of dielectric response of human platelets were decided, which demonstrated the dependence of permittivity and conductivity of human platelets upon frequency, and showed two characteristic frequencies of the dielectric spectroscopy of human platelets: the first characteristic frequency f(C1) = 6.66 MHz; the second characteristic frequency f(C2) = 9.81 MHz.
在100千赫兹至100兆赫兹的频率范围内测量了人体血小板的介电谱,并分析了人体血小板在交流电场作用下的介电数值特征。我们首次采用阻抗技术在频域中测量了正常人血小板的交流阻抗。利用实验数据绘制了电场频率与介电常数或电导率之间的关系曲线,进而建立了人体血小板的介电谱和科尔-科尔图,确定了人体血小板的介电响应特性,结果表明人体血小板的介电常数和电导率与频率有关,并显示出人体血小板介电谱的两个特征频率:第一个特征频率f(C1)=6.66兆赫兹;第二个特征频率f(C2)=9.81兆赫兹。