Appl Opt. 2020 May 1;59(13):D6-D11. doi: 10.1364/AO.382383.
We study the use of three effective medium theory models, namely Maxwell-Garnett, Bruggeman, and Landau-Lifshitz-Looyenga, for the dielectric response of biological tissue in the terahertz band of the electromagnetic spectrum. In order to accomplish our objectives, we performed measurements on water-dehydrated basil binary mixtures encompassing the entire concentration range, and we further analyze the dielectric function with the models. Our results indicate that the Landau-Lifshitz-Looyenga and Bruggeman models provide marginally better fit to the experimentally measured dielectric function in the terahertz band. We further discuss the biological relevance of the models in the context of our experimental data based on their fundamental assumptions.
我们研究了三种有效介质理论模型，即 Maxwell-Garnett、Bruggeman 和 Landau-Lifshitz-Looyenga，用于研究生物组织在电磁光谱太赫兹波段的介电响应。为了实现我们的目标，我们对水脱除罗勒二元混合物进行了测量，涵盖了整个浓度范围，并进一步用这些模型分析了介电函数。我们的结果表明，在太赫兹波段，Landau-Lifshitz-Looyenga 和 Bruggeman 模型与实验测量的介电函数的拟合更好。我们进一步根据模型的基本假设，结合我们的实验数据，讨论了模型在生物学方面的相关性。
