Turbulent nature of refractive-index variations in biological tissue
Turbulent nature of refractive-index variations in biological tissue
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DOI：
10.1364/ol.21.001310
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发表时间：
1996-08-15
期刊：
影响因子：
3.6
通讯作者：
Kumar, G
中科院分区：
文献类型：
--
作者：
Schmitt, JM;Kumar, G
相差显微镜显示，各种哺乳动物组织中折射率不均匀的结构类似于冰冻湍流的结构。在一系列尺度上看，折射率变化的频谱在至少十年(0.5-5微米(-1))的空间频率范围内表现出幂规律行为，并且在4-10微米范围内具有外部尺度，在此之上不再看到相关性。观测到的结构函数符合经典的Kolmogorov湍流模型。这些观察对理解光在组织中的传播是基本的，并可能提供关于组织如何发展和组织的线索。(C)1996年美国光学学会
Phase-contrast microscopy shows that the structure of the refractive-index inhomogeneities in a variety of mammalian tissues resembles that of frozen turbulence. Viewed over a range of scales, the spectrum of index variations exhibits a power-law behavior for spatial frequencies spanning at least a decade (0.5-5 mu m(-1)) and has an outer scale in the range of 4-10 mu m, above which correlations are no longer seen. The observed structure function fits the classical Kolmogorov model of turbulence. These observations are fundamental to understanding light propagation in tissue and may provide clues about how tissues develop and organize. (C) 1996 Optical Society of America